Reference Index#

Magnetic Materials Ontology (Magmo)#

Classes#

AbsolutePermeability#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_98f7a685-fa5a-54f1-8504-f398047f3ab6
Annotations
prefLabel AbsolutePermeability
altLabel mu
elucidation Ratio of the change of magnetic flux density and the internal
field: B = mu H.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-12-28
Formal description
subClassOf ElectromagneticQuantity
Restrictions

AmorphousMagneticMaterial#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_694b3915-3326-5fb2-87a1-20ccf1dc79dc
Annotations
prefLabel AmorphousMagneticMaterial
elucidation Any amorphous structure entails a distribution of nearest-neighbour
environments and bond lengths for a given magnetic atom, described by
the radial distribution function and higher-order correlation
functions. These distributions lead to a distribution of site moments,
exchange interactions, dipolar and crystal fields, all of which
influence the nature of the magnetic order.
wikipediaReference https://en.wikipedia.org/wiki/Amorphous_magnet
Formal description
subClassOf AmorphousMaterial, MagneticMaterial

AmpereSquareMeterPerKilogram#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_dc6e9b19-6f19-5106-a014-5fba0dab0d1e
Annotations
prefLabel AmpereSquareMeterPerKilogram
altLabel AmpereSquareMetrePerKilogram
elucidation Unit of the magnetic moment per unit mass: Am²/kg.
Formal description
subClassOf MassMagnetizationUnit

AnisotropyField#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_cd58ebab-4351-5d0d-ad45-bbddd6efead3
Annotations
prefLabel AnisotropyField
altLabel Ha
elucidation The anisotropy field Ha is defined as the field needed to
saturate the magnetization of a uniaxial crystal in a hard direction.
Ha = 2 Ku/Js
Formal description
subClassOf MagneticFieldStrength

BinderCumulant#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_a3596efd-1d89-5253-8ddc-000bfadc4201
Annotations
prefLabel BinderCumulant
altLabel U_L, BinderParameter
elucidation A dimensionless fourth-order cumulant of magnetization, defined as U4 = 1 −
/(3 ^2), where m is the normalised magnetization (magnetization per
site). It is used in finite-size scaling as an approximately scale-independent
measure of critical fluctuations: curves for different system sizes intersect
near the phase-transition temperature, enabling estimation of Tc without direct
extrapolation to infinite system size.
wikidataReference https://www.wikidata.org/wiki/Q4913987
wikipediaReference https://en.wikipedia.org/wiki/Binder_parameter
Formal description
subClassOf ISQDimensionlessQuantity

BulkMagnet#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_d28323da-810f-5cbe-a770-eab7e7fdb493
Annotations
prefLabel BulkMagnet
elucidation Piece of matter made of one or more magnetic material.
Formal description
subClassOf MaterialBySize, Magnet
Restrictions

CellVolume#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_2b7f8b13-d0c3-590c-9851-ca89ce5b7395
Annotations
prefLabel CellVolume
altLabel UnitCellVolume
elucidation Volume of the unit cell.
Formal description
subClassOf Volume

CoercivityBHc#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_69772e86-d7fb-5b43-9cd4-2f0770c6701f
Annotations
prefLabel CoercivityBHc
altLabel BHc
elucidation Defined as internal field on the B(H) loop where B = 0.
It is also called flux coercivity BHc.

BHc depends on sample shape and has to be corrected for the
demagnetizing field.
Formal description
subClassOf Coercivity

CoercivityBHcExternal#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_a4bc4536-f381-5bcd-b6ca-34fb1a913efd
Annotations
prefLabel CoercivityBHcExternal
altLabel BH'c
elucidation Defined as external field on the B(H') loop where
B = 0. H' is the external field.
Formal description
subClassOf Coercivity

CoercivityHc#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_0d67d6c5-a8a7-57d4-930a-e99412baa2c2
Annotations
prefLabel CoercivityHc
altLabel Hc, CoerciveField, CoercivityHcInternal, CoercivityInternal
elucidation The internal magnetic field -Hc at which the macroscopic
magnetization vanishes is the coercivity or coercive force.

Although it is not an intrinsic property in our sense of the term,
the M-H loop coercivity Hc is sometimes referred to as
'intrinsic' coercivity.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-12-69, https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-02-35, https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-02-36
wikidataReference https://www.wikidata.org/wiki/Q432635
Formal description
subClassOf Coercivity

CoercivityHcExternal#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_fe101d1d-f1f7-54f8-886b-fa6d6052ce98
Annotations
prefLabel CoercivityHcExternal
altLabel H'c
elucidation The external magnetic field -H'c at which the macroscopic
magnetization vanishes.
The coercivity on M(H') loop, where H' is the external field.
Formal description
subClassOf Coercivity
Subclasses LocalCoercivity

CrystalStructure#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_2c96e798-57dc-5c12-ad10-f3ec261549d3
Annotations
prefLabel CrystalStructure
elucidation Description of ordered arrangement of atoms.
wikidataReference https://www.wikidata.org/wiki/Q895901
wikipediaReference https://en.wikipedia.org/wiki/Crystal_structure
Formal description
subClassOf Referent, Property
Restrictions

CrystallineMagneticMaterial#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_aaa107b8-4dd9-5fc8-b135-a604a0cb38b1
Annotations
prefLabel CrystallineMagneticMaterial
elucidation Magnetic material with crystalline structure.
Formal description
subClassOf GranularStructure, MagneticMaterial

CrystallographicOrientation#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_4f709756-86ee-5307-880a-696d08ae9732
Annotations
prefLabel CrystallographicOrientation
altLabel CrystalOrientation
elucidation Relative direction of a crystallite in space with respect to
another, disregarding distance.
wikidataReference https://www.wikidata.org/wiki/Q11799166
Formal description
subClassOf Referent, Property
Restrictions

CubicMagnetocrystallineAnisotropy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_af109e05-abbd-5964-8e39-8249b9eda7da
Annotations
prefLabel CubicMagnetocrystallineAnisotropy
elucidation Cubic crystals anisotropy.
Formal description
subClassOf Referent, MagneticAnisotropy
Restrictions

DemagnetizingFactor#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_0f2b5cc9-d00a-5030-8448-99ba6b7dfd1e
Annotations
prefLabel DemagnetizingFactor
altLabel D, N, DemagnetisingFactor
elucidation For a uniformly magnetized ellipsoid with magnetization along a
major axis the demagnetizing field is Hd = -N M.

The principal components of the diagonal demagnetizing tensor form
the demagnetizing factors. Only two of the three are independent
because the demagnetizing tensor has unit trace Nx + Ny + Nz = 1.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-12-63
Formal description
subClassOf ElectromagneticQuantity
Restrictions

DemagnetizingField#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_ace0a9bf-0b4d-5cd2-be02-3c3b816a279b
Annotations
prefLabel DemagnetizingField
altLabel Hd, DemagnetisingField
elucidation The magnetic field produced by the magnetization distribution
of the sample itself.
wikidataReference https://www.wikidata.org/wiki/Q5255001
wikipediaReference https://en.wikipedia.org/wiki/Demagnetizing_field
Formal description
subClassOf ElectromagneticQuantity
Restrictions

EasyAxisDistributionSigma#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_af13f0cd-63c7-50f5-9f20-59d54fc09710
Annotations
prefLabel EasyAxisDistributionSigma
elucidation Standard deviation of the grain misalignment angle in an ensembles
of misaligned magnetic particles.

This refers not only to isotropic magnets but also to
partly aligned or textured magnets, where the easy-axis distribution
is described by a function P(theta).
Formal description
subClassOf Angle

EdxCounts#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_00b80934-8716-5e19-8ba9-73251ef414d3
Annotations
prefLabel EdxCounts
altLabel EDXCounts
elucidation Counts as a function of energy obtained from Energy-Dispersive
X-ray spectroscopy.
Formal description
subClassOf PhysicalQuantity, Vector, Information
Restrictions

EdxData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_e91449bb-6e20-5a3f-b345-a2f0717fb0a6
Annotations
prefLabel EdxData
altLabel EDXData, EnergyDispersiveXraySpectroscopyData
elucidation Counts as a function of energy obtained from Energy-Dispersive
X-ray spectroscopy.
Formal description
subClassOf Matrix, Information, Referent, Property
Subclasses LocalEdxData
Restrictions

EdxEnergy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_b159f5d4-a3da-5850-aac9-39016907aee6
Annotations
prefLabel EdxEnergy
altLabel EDXEnergy
elucidation The energy values at which the counts are measured during
Energy-Dispersive X-ray spectroscopy.
Formal description
subClassOf PhysicalQuantity, Vector, Information
Restrictions

EnergyDensity#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_56258d3a-f2ee-554e-af99-499dd8620457
Annotations
prefLabel EnergyDensity
elucidation Energy Density.
Formal description
subClassOf PhysicalQuantity
Subclasses MagnetocrystallineAnisotropyConstantK1c, MagnetocrystallineAnisotropyEnergy, MagnetocrystallineAnisotropyConstantK1, ShapeAnisotropyConstant, MagnetocrystallineAnisotropyConstantK2, UniaxialAnisotropyConstant, MagnetocrystallineAnisotropyConstantK2c
Restrictions

EnergyDensityUnit#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_8f4dc04f-d753-55b3-b405-996199149372
Annotations
prefLabel EnergyDensityUnit
elucidation Unit of energy density. Defined using SI base units.
Formal description
subClassOf SIDimensionalUnit
Subclasses MegaJoulePerCubicMetre, JoulePerCubicMetre
Restrictions

EulerAngles#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_bc4030ff-d125-5e63-b8f8-b2ef3d08b6d5
Annotations
prefLabel EulerAngles
elucidation Three angles introduced by Leonhard Euler to describe the
orientation of a rigid body with respect to a fixed coordinate
system.
wikidataReference https://www.wikidata.org/wiki/Q751290
Formal description
subClassOf Quantity
Restrictions

ExchangeStiffnessConstant#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_526ed2a5-a017-590e-8eb8-8a900f2b3b78
Annotations
prefLabel ExchangeStiffnessConstant
altLabel A
elucidation Exchange constant, A, in the continuum theory of micromagnetism.

The exchange stiffness A is related to the Curie temperature TC:
A is roughly k_B T_c/(2 a_0), where a_0 is the lattice parameter in
a simple structure.
Formal description
subClassOf LineEnergy

ExternalMagneticField#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_da08f0d3-fe19-58bc-8fb6-ecc8992d5eb3
Annotations
prefLabel ExternalMagneticField
altLabel H', AppliedMagneticField
elucidation The external field H′, acting on a sample that is produced by
electric currents or the stray field of magnets outside the sample
volume, is often called the applied field.
Formal description
subClassOf ElectromagneticQuantity
Restrictions

ExternalSusceptibility#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_d96c3ad6-5fcc-5628-93b6-bfac2fca8249
Annotations
prefLabel ExternalSusceptibility
altLabel chi'
elucidation Ratio of the change of magnetization and the external
field: M = chi' H'.
wikidataReference https://www.wikidata.org/wiki/Q691463
Formal description
subClassOf MagneticSusceptibility

ExtrinsicMagneticProperties#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_8a0c8d0a-3dc7-5f3f-ab20-24b38d188827
Annotations
prefLabel ExtrinsicMagneticProperties
elucidation Extrinsic magnetic Properties depend on the microstructure.
Formal description
subClassOf Referent, Property
Restrictions

GeometricShape#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_aa999d91-076f-512a-85a0-c2f751c083b1
Annotations
prefLabel GeometricShape
elucidation Geometric shape.

Two extrinsic properties, the remanence Mr
and coercivity Hc, which depend on the sample shape
wikidataReference https://www.wikidata.org/wiki/Q207961
wikipediaReference https://en.wikipedia.org/wiki/Shape
Formal description
subClassOf Information, Geometrical, Property, SpatioTemporalTessellation
Restrictions

GeometricalSize#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_0213900b-ab6d-56be-82fb-4db874974de1
Annotations
prefLabel GeometricalSize
elucidation Spatial extension along the principal axes.
wikipediaReference https://en.wikipedia.org/wiki/Size
Formal description
subClassOf Referent, Property
Restrictions

Grain#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_b0f0e57e-464d-562f-80ec-b216c92d5e88
Annotations
prefLabel Grain
altLabel Crystallite
elucidation A grain is a small or even microscopic crystal which forms, for
example, during the cooling of many materials.
wikidataReference https://www.wikidata.org/wiki/Q899604
wikipediaReference https://en.wikipedia.org/wiki/Crystallite
Formal description
subClassOf Crystal, Referent
Restrictions

GrainBoundaryPhase#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_871868f1-1486-55df-b351-23a4076f1bb3
Annotations
prefLabel GrainBoundaryPhase
elucidation Material separating grains in a microstructure.
Formal description
subClassOf SecondaryPhase
Restrictions

GrainMisalignmentAngle#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5408b3d3-4971-564b-a34c-53e4e3c3f44d
Annotations
prefLabel GrainMisalignmentAngle
elucidation Standard deviation of the angle of the easy axis with respect to
the alignment direction.
wikidataReference https://www.wikidata.org/wiki/Q117089304
Formal description
subClassOf Angle

GrainSizeDistribution#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_ada88738-c901-5d83-884b-5f84d27ce527
Annotations
prefLabel GrainSizeDistribution
altLabel ParticleSizeDistribution
elucidation Function representing relative sizes of grains in a system.
Given by its mean and standard deviation of a lognormal distribution
wikidataReference https://www.wikidata.org/wiki/Q2054937
wikipediaReference https://en.wikipedia.org/wiki/Particle-size_distribution
Formal description
subClassOf Referent, Property
Restrictions

GranularMicrostructure#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_cf5261fe-bdab-5c7b-b6a8-f9a313687bc2
Annotations
prefLabel GranularMicrostructure
elucidation The granular structure of a magnetic materials.
Formal description
subClassOf Material
Restrictions

GranularStructure#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_75b995e0-2bac-5812-a7f6-f8c1731d1d5c
Annotations
prefLabel GranularStructure
elucidation Ensemble of grains of 1 or more grains.
Formal description
subClassOf Referent, CrystallineMaterial
Subclasses CrystallineMagneticMaterial
Restrictions

InducedMagneticAnisotropy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_eac1f731-95b1-5f31-ab94-2615535ea223
Annotations
prefLabel InducedMagneticAnisotropy
elucidation Uniaxial anisotropy induced by annealing in a magnetic field or
by applying a stress.
Formal description
subClassOf UniaxialMagneticAnisotropy

InternalMagneticField#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_b727c447-8428-56ca-9e5a-5ced008760ad
Annotations
prefLabel InternalMagneticField
altLabel H
elucidation The internal field in the sample in the continuous medium
approximation is the sum of the external field H′ and the
demagnetizing field Hd.
Formal description
subClassOf ElectromagneticQuantity
Restrictions

InternalSusceptibility#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_ab8a0d3e-6d0f-599e-a119-a91aa99bd881
Annotations
prefLabel InternalSusceptibility
altLabel chi
elucidation Ratio of the change of magnetization and the internal
field: M = chi H.
wikidataReference https://www.wikidata.org/wiki/Q691463
Formal description
subClassOf MagneticSusceptibility

IntrinsicMagneticProperties#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_af8d3fb8-20fe-5f9f-9f85-fd298e26ad7e
Annotations
prefLabel IntrinsicMagneticProperties
elucidation Intrinsic magnetic properties refer to atomic-scale magnetism and
depend on the crystal structure.
Formal description
subClassOf Referent, Property
Restrictions

KneeField#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_ad0c038b-a09a-560c-b149-066de8f8e307
Annotations
prefLabel KneeField
altLabel Hk, KneeFieldInternal, MaximumWorkingField
elucidation The maximum working field - also named knee field H_K, is
defined as the reverse internal field for which the magnetization
is reduced by 10%; thus it corresponds to the point on the
magnetization loop for which M = 0.9 Mr (J = 0.9 Jr).
Formal description
subClassOf MagneticFieldStrength

KneeFieldExternal#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_45a36799-2309-5097-969f-4e5c002ae2f0
Annotations
prefLabel KneeFieldExternal
altLabel H'k
elucidation The maximum working field - also named knee field H_K,
is defined as the reverse external field for which the
magnetization is reduced by 10%; thus it corresponds to the
point on the magnetization loop for which M = 0.9 Mr (J = 0.9 Jr).
Formal description
subClassOf MagneticFieldStrength

LatticeConstantA#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_ef314f95-f3b5-5cb7-ac56-7bfc54f0d955
Annotations
prefLabel LatticeConstantA
altLabel LatticeParameterA
elucidation The length of lattice vectors `a`, where lattice vectors
`a`, `b` and `c` define the unit cell.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=561-07-13
wikidataReference https://www.wikidata.org/wiki/Q625641
wikipediaReference https://en.wikipedia.org/wiki/Lattice_constant
Formal description
subClassOf Length
Subclasses LocalLatticeConstantA

LatticeConstantAlpha#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_b2a130c3-9688-5358-94ca-f226b85b3009
Annotations
prefLabel LatticeConstantAlpha
altLabel LatticeParameterAlpha
elucidation The angle between lattice vectors `b` and `c`, where lattice
vectors `a`, `b` and `c` define the unit cell.
wikidataReference https://www.wikidata.org/wiki/Q625641
Formal description
subClassOf Angle

LatticeConstantB#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_a1f03bbf-c503-5759-9a26-2562527c0db2
Annotations
prefLabel LatticeConstantB
altLabel LatticeParameterB
elucidation The length of lattice vectors `b`, where lattice vectors `a`, `b`
and `c` define the unit cell.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=561-07-13
wikidataReference https://www.wikidata.org/wiki/Q625641
wikipediaReference https://en.wikipedia.org/wiki/Lattice_constant
Formal description
subClassOf Length

LatticeConstantBeta#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_2ca16b3d-f83e-583c-8292-beb6473ea021
Annotations
prefLabel LatticeConstantBeta
altLabel LatticeParameterBeta
elucidation The angle between lattice vectors `a` and `c`, where lattice
vectors `a`, `b` and `c` define the unit cell.
wikidataReference https://www.wikidata.org/wiki/Q625641
Formal description
subClassOf Angle

LatticeConstantC#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_9977edfa-2b42-55e4-bea0-f39fadca7126
Annotations
prefLabel LatticeConstantC
altLabel LatticeParameterC
elucidation The length of lattice vectors `c`, where lattice vectors `a`, `b`
and `c` define the unit cell.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=561-07-13
wikidataReference https://www.wikidata.org/wiki/Q625641
wikipediaReference https://en.wikipedia.org/wiki/Lattice_constant
Formal description
subClassOf Length
Subclasses LocalLatticeConstantC

LatticeConstantGamma#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_a205766b-7c02-5c56-90e5-96c553c316c8
Annotations
prefLabel LatticeConstantGamma
altLabel LatticeParameterGamma
elucidation The angle between lattice vectors `a` and `b`, where lattice
vectors `a`, `b` and `c` define the unit cell.
wikidataReference https://www.wikidata.org/wiki/Q625641
Formal description
subClassOf Angle

LineEnergy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_70f92e7c-fa16-51d5-9ca0-5ad635cb1322
Annotations
prefLabel LineEnergy
altLabel EnergyPerLength, EnergyPerUnitLength
elucidation Energy per unit length.
Formal description
subClassOf PhysicalQuantity
Subclasses ExchangeStiffnessConstant
Restrictions

LineEnergyUnit#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_3fb622c3-dc0a-5a10-a8b8-cbd040626244
Annotations
prefLabel LineEnergyUnit
elucidation Unit of energy per unit length. Defined using SI base units.
Formal description
subClassOf SIDimensionalUnit
Subclasses JoulePerMetre
Restrictions

LocalAnnealingTemperature#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_39f76436-174c-51d5-b531-0fc50fb1aebe
Annotations
prefLabel LocalAnnealingTemperature
elucidation Local annealing temperature from heat treatment such as
Rapid Thermal Annealing (RTA).
Formal description
subClassOf ThermodynamicTemperature
Restrictions

LocalAnnealingTime#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_d29449e0-e261-5d06-871a-4f61e547497a
Annotations
prefLabel LocalAnnealingTime
altLabel LocalAnnealingDuration
elucidation Local annealing time (duration) from heat treatment such as
Rapid Thermal Annealing (RTA).
Formal description
subClassOf Duration
Restrictions

LocalAtomPercent#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5301f12c-a2b9-593d-aca2-54070821a720
Annotations
prefLabel LocalAtomPercent
altLabel LocalAtomicPercent, at.%
elucidation Local atomic percentage obtained from EDX quantification.
Formal description
subClassOf RatioQuantity
Restrictions

LocalCoercivity#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_17f52ffb-c461-546a-8af6-299a506c8657
Annotations
prefLabel LocalCoercivity
elucidation Local coercive field measured with the magneto-optic Kerr effect.
Formal description
subClassOf CoercivityHcExternal
Restrictions

LocalEdxData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_0829e261-a75d-5ed7-95c8-4a8e7865c76f
Annotations
prefLabel LocalEdxData
altLabel LocalEDXData
elucidation Local EDX data measured at a specific position.
Formal description
subClassOf EdxData
Restrictions

LocalLatticeConstantA#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_c6ed4948-e599-5f09-aa07-b70121c41fcf
Annotations
prefLabel LocalLatticeConstantA
elucidation The length of lattice vectors `a`, where lattice vectors
`a`, `b` and `c` defines the unit cell, measured locally.
Formal description
subClassOf LatticeConstantA
Restrictions

LocalLatticeConstantC#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_dbb7c1bc-034f-5f4b-9329-d23ed8915961
Annotations
prefLabel LocalLatticeConstantC
elucidation The length of lattice vectors `c`, where lattice vectors
`a`, `b` and `c` defines the unit cell, measured locally.
Formal description
subClassOf LatticeConstantC
Restrictions

LocalMassPercent#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_ff8c1d96-1eb2-5385-8036-82aff23797df
Annotations
prefLabel LocalMassPercent
altLabel LocalWeightPercent, wt.%
elucidation Local mass percentage obtained from EDX quantification.
Formal description
subClassOf RatioQuantity
Restrictions

LocalMokeData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_b923524a-a735-53a4-9762-3409ed485e5a
Annotations
prefLabel LocalMokeData
altLabel LocalMOKEData
elucidation Local MOKE data measured at a specific position.
Formal description
subClassOf MokeData
Restrictions

LocalPhaseFraction#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5bf7a2a2-d466-588a-b794-af4ac13285df
Annotations
prefLabel LocalPhaseFraction
altLabel LocalPhaseContent
elucidation Local phase fraction obtained from XRD analysis, typically
expressed in weight percent.
Formal description
subClassOf RatioQuantity
Restrictions

LocalProfilometryData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_18ac758e-3896-59cf-a7c6-7999dd6ef1af
Annotations
prefLabel LocalProfilometryData
elucidation Local profilometry data measured at a specific position.
Formal description
subClassOf ProfilometryData
Restrictions

LocalReflectivity#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_c44c0546-452e-592f-b6bc-27a64e79244c
Annotations
prefLabel LocalReflectivity
elucidation Local reflectivity measured with the magneto-optic Kerr effect.
Formal description
subClassOf Reflectivity
Restrictions

LocalThickness#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_efffe3e8-6bd8-5944-ba38-6facf656c61d
Annotations
prefLabel LocalThickness
elucidation The thickness of the film measured locally.
Formal description
subClassOf Thickness
Restrictions

LocalXrayDiffractionData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_6aac026a-3928-5c21-9bb6-94497607bef2
Annotations
prefLabel LocalXrayDiffractionData
elucidation Local X-ray diffraction data.
Formal description
subClassOf XrayDiffractionData
Restrictions

LoopSquareness#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_f3d81518-1594-5eb0-bd68-42466e0c37d8
Annotations
prefLabel LoopSquareness
altLabel SS, Squareness
elucidation The external loop squareness is defined as the ratio of
the remanent polarisation over the saturation polarisation
(SS = RemanentMagneticPolarization / SaturationMagneticPolarization).
Formal description
subClassOf ElectromagneticQuantity, RatioQuantity
Restrictions

LoopSquarenessFactorExternal#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_8108b720-e94e-5201-86e6-1434344cffca
Annotations
prefLabel LoopSquarenessFactorExternal
altLabel SF_external, SquarenessFactorExternal
elucidation The external loop squareness factor is defined as the ratio of
the external KneeField H'k over the external Coercivity H'c
(SF' = KneeFieldExternal / CoercivityHcExternal).
Formal description
subClassOf ElectromagneticQuantity, RatioQuantity
Restrictions

LoopSquarenessFactorInternal#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_4746f629-2b2f-5d43-b698-a81519eb2b2b
Annotations
prefLabel LoopSquarenessFactorInternal
altLabel SF_internal, SquarenessFactorInternal
elucidation The internal loop squareness factor SF is defined as the ratio of
the internal KneeField Hk over the internal Coercivity Hc
(SF = KneeFieldInternal / CoercivityHcInternal).
Formal description
subClassOf ElectromagneticQuantity, RatioQuantity
Restrictions

Magnet#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_099b796d-3163-56c7-bc90-3a304256ca5d
Annotations
prefLabel Magnet
elucidation Piece of matter made of one or more magnetic materials.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=151-14-06
wikidataReference https://www.wikidata.org/wiki/Q11421
wikipediaReference https://en.wikipedia.org/wiki/Magnet
Formal description
subClassOf Referent, MaterialByFunction
Subclasses ThinFilmMagnet, BulkMagnet, MultilayerMagnet
Restrictions

MagneticAnisotropy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_3a63baaf-4d7c-5ea5-93ce-9c8917a3290c
Annotations
prefLabel MagneticAnisotropy
elucidation Magnetic anisotropy means that the magnetic properties depend on
the direction in which they are measured.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-01-08
wikipediaReference https://en.wikipedia.org/wiki/Magnetic_anisotropy
Formal description
subClassOf Property
Subclasses CubicMagnetocrystallineAnisotropy, ShapeAnisotropy, UniaxialMagneticAnisotropy

MagneticHysteresisProperties#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_14a12902-9845-5be6-bd0b-511dcea31985
Annotations
prefLabel MagneticHysteresisProperties
elucidation The essential practical characteristic of any ferromagnetic material
is the irreversible nonlinear response of magnetization M to an imposed
magnetic field H. This response is given by the hysteresis loop. The
characteristics of hysteresis loop are known as hysteresis properties.

Instead of M(H), other quantities can be used to plot a hysteresis loop.

M(H): Magnetization as function of the internal field.
M(H'): Magnetization as function of the external field.

J(H): Magnetic polarization as function of the internal field.
J(H'): Magnetic polarization as function of the external field.

B(H): Magnetic flux density as function of the internal field.
B(H'): Magnetic flux density as function of the external field.
Formal description
subClassOf Referent, Property
Restrictions

MagneticMaterial#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_c5ca93ce-ad27-5f4a-95ef-aca0990c6937
Annotations
prefLabel MagneticMaterial
elucidation Magnetically ordered solids which have atomic magnetic moments due
to unpaired electrons.
wikidataReference https://www.wikidata.org/wiki/Q11587827
Formal description
subClassOf Referent, MaterialByStructure
Subclasses CrystallineMagneticMaterial, MainMagneticPhase, AmorphousMagneticMaterial
Restrictions

MagneticMomentPerUnitMass#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_6183019b-73eb-51bc-87ca-06a7a1ad9cb1
Annotations
prefLabel MagneticMomentPerUnitMass
altLabel sigma, SpecificMagneticMoment, MassMagnetisation, MassMagnetization
elucidation Magnetic moment per unit mass, sigma.
Formal description
subClassOf ElectromagneticQuantity
Restrictions

MagnetocrystallineAnisotropy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_c0a72108-de97-5dff-a830-e4b617adaeef
Annotations
prefLabel MagnetocrystallineAnisotropy
elucidation Magnetocrystalline anisotropy is an intrinsic property. The
magnetisation process is different when the field is applied along
different crystallographic directions, and the anisotropy reflects
the crystal symmetry. Its origin is in the crystal-field interaction
and spin-orbit coupling, or else the interatomic dipole–dipole
interaction.
wikidataReference https://www.wikidata.org/wiki/Q6731660
wikipediaReference https://en.wikipedia.org/wiki/Magnetocrystalline_anisotropy
Formal description
subClassOf Referent, Property
Restrictions

MagnetocrystallineAnisotropyConstantK1#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_2bb87117-30f9-5b3a-b406-731836a3902f
Annotations
prefLabel MagnetocrystallineAnisotropyConstantK1
altLabel K1
elucidation The magnetocrystalline constant K1 for tetragonal or
hexagonal crystals.
wikipediaReference https://en.wikipedia.org/wiki/Magnetocrystalline_anisotropy
Formal description
subClassOf EnergyDensity

MagnetocrystallineAnisotropyConstantK1c#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_527989d5-7417-5d94-83bf-4db785827a88
Annotations
prefLabel MagnetocrystallineAnisotropyConstantK1c
altLabel K1c
elucidation The magnetocrystalline constant K1c for cubic crystals.
wikipediaReference https://en.wikipedia.org/wiki/Magnetocrystalline_anisotropy
Formal description
subClassOf EnergyDensity

MagnetocrystallineAnisotropyConstantK2#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_675fa9ea-408a-51f6-a001-2e6715568a71
Annotations
prefLabel MagnetocrystallineAnisotropyConstantK2
altLabel K2
elucidation The magnetocrystalline constant K2 for tetragonal or
hexagonal crystals.
wikipediaReference https://en.wikipedia.org/wiki/Magnetocrystalline_anisotropy
Formal description
subClassOf EnergyDensity

MagnetocrystallineAnisotropyConstantK2c#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_c4aefa50-a3d0-548d-96ea-dd863ba27234
Annotations
prefLabel MagnetocrystallineAnisotropyConstantK2c
altLabel K2c
elucidation The magnetocrystalline constant K2c for cubic crystals.
wikipediaReference https://en.wikipedia.org/wiki/Magnetocrystalline_anisotropy
Formal description
subClassOf EnergyDensity

MagnetocrystallineAnisotropyEnergy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_e9e3b7d2-d4fa-5140-88dc-2f0d60cf6d15
Annotations
prefLabel MagnetocrystallineAnisotropyEnergy
altLabel MAE
elucidation The magnetocrystalline anisotropy energy density.
wikipediaReference https://en.wikipedia.org/wiki/Magnetocrystalline_anisotropy
Formal description
subClassOf EnergyDensity

Magnetoresistance#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5be2f193-36d0-5aac-90b8-52db055d8252
Annotations
prefLabel Magnetoresistance
altLabel MR
elucidation Change of the resistivity of a substance due to an applied
magnetic field.

Magnetoresistance can be defined as MR = [ϱ(B)-ϱ(0)]/ϱ(0).
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-12-83
wikidataReference https://www.wikidata.org/wiki/Q58347
wikipediaReference https://en.wikipedia.org/wiki/Magnetoresistance
Formal description
subClassOf RatioQuantity
Restrictions

MainMagneticPhase#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_8894d78f-5d53-540e-a278-17c93e1be2ab
Annotations
prefLabel MainMagneticPhase
elucidation Main phase of the magnet
Formal description
subClassOf PhaseOfMatter, MagneticMaterial
Restrictions

MassMagnetizationUnit#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5375f349-61e9-5985-9a7b-9f5464248145
Annotations
prefLabel MassMagnetizationUnit
altLabel MassMagnetisationUnit, SpecificMagnetisationUnit, SpecificMagnetizationUnit
elucidation Class of units of the magnetization per unit mass.
Defined using SI base units.
Formal description
subClassOf SIDimensionalUnit
Subclasses AmpereSquareMeterPerKilogram
Restrictions

MassSusceptibility#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_49768356-1ec9-5316-adbc-81001ecd770f
Annotations
prefLabel MassSusceptibility
altLabel chi_m
elucidation Ratio of the change of the magnetic moment per unit mass and
the internal field: sigma = chi_m H.
wikidataReference https://www.wikidata.org/wiki/Q104655916
Formal description
subClassOf ElectromagneticQuantity
Restrictions

MaximumEnergyProduct#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_e1028129-c23e-57ac-9174-2f34ddbf3926
Annotations
prefLabel MaximumEnergyProduct
altLabel (BH)max
elucidation The value of the maximum energy product (BH)max is deduced from a
plot of BH(B) for all points of the second quadrant of the B-H
hysteresis loop. BH varies with B going through a maximum value (BH)max
for a particular value of B.

(BH)max equals the area of the largest second-quadrant rectangle which
fits under the B-H loop.

The maximum energy product is considered to be the best single index
of quality of a permanent magnet material.
It is twice the energy stored in the stray field of the magnet of
optimal shape.
wikipediaReference https://en.wikipedia.org/wiki/Maximum_energy_product
Formal description
subClassOf ElectromagneticQuantity
Restrictions

MeanGrainSize#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_8d2f8eff-85d7-5819-8dcd-a77674c40aff
Annotations
prefLabel MeanGrainSize
elucidation The mean of the grain diameter of grains. Diameter is the diameter
of a sphere with equivalent volume.
Formal description
subClassOf Length

MokeAppliedField#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_90498908-fc7e-5c6e-8d31-f18a19f63428
Annotations
prefLabel MokeAppliedField
altLabel MOKEAppliedField
elucidation The applied magnetic field values during MOKE measurement.
Formal description
subClassOf PhysicalQuantity, Vector, Information
Restrictions

MokeData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_593f0012-bdf1-5e7a-ace0-648babc7db3f
Annotations
prefLabel MokeData
altLabel MOKEData, MagnetoOpticKerrEffectData
elucidation Kerr signal as a function of applied magnetic field obtained
from Magneto-Optic Kerr Effect measurement.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=121-12-97
wikipediaReference https://en.wikipedia.org/wiki/Magneto-optic_Kerr_effect
Formal description
subClassOf Matrix, Information, Referent, Property
Subclasses LocalMokeData
Restrictions

MokeKerrSignal#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_32ce4184-6d36-5ce5-8026-95e51f23b2cf
Annotations
prefLabel MokeKerrSignal
altLabel KerrSignal, MOKEKerrSignal
elucidation The Kerr signal (rotation or ellipticity) as a function of
applied field obtained from MOKE measurement.
Formal description
subClassOf PhysicalQuantity, Vector, Information
Restrictions

MultilayerMagnet#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_4ee603fc-7a1e-51f0-bf75-8e66f9a5539b
Annotations
prefLabel MultilayerMagnet
elucidation Piece of matter made of stacked layers of one or more magnetic
materials.
Formal description
subClassOf SpatialTiling, Magnet
Restrictions

NonMagneticMaterial#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_1bda25f0-3b11-5547-a27c-4e3a638b740a
Annotations
prefLabel NonMagneticMaterial
elucidation A material which is non-magnetic.
Formal description
subClassOf Material, Referent
Restrictions

ProfilDistance#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_c51601b4-701b-5eff-8465-3083cf830c97
Annotations
prefLabel ProfilDistance
altLabel PROFILDistance
elucidation The distance values along the scan direction during
profilometry measurement.
Formal description
subClassOf PhysicalQuantity, Vector, Information
Restrictions

ProfilTotalProfile#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_85ec26ba-17db-5ea6-9d27-ddde5ee31706
Annotations
prefLabel ProfilTotalProfile
altLabel PROFILTotalProfile
elucidation The height profile as a function of distance obtained from
profilometry measurement.
Formal description
subClassOf PhysicalQuantity, Vector, Information
Restrictions

ProfilometryData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_6a3ee380-bdbf-53bb-af82-c2011af61652
Annotations
prefLabel ProfilometryData
elucidation Height profile as a function of distance obtained from
profilometry measurement.
wikipediaReference https://en.wikipedia.org/wiki/Profilometer
Formal description
subClassOf Matrix, Information, Referent, Property
Subclasses LocalProfilometryData
Restrictions

RectangularCuboid#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_b98abf93-8054-5955-bb06-076e22b0b4c7
Annotations
prefLabel RectangularCuboid
elucidation A rectangular cuboid is a special case of a cuboid with rectangular
faces in which all of its dihedral angles are right angles.
wikidataReference https://www.wikidata.org/wiki/Q262959
wikipediaReference https://en.wikipedia.org/wiki/Rectangular_cuboid
Formal description
subClassOf EuclideanSpace

Reflectivity#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_d6020727-daa9-5379-8ec4-ba1a02f7d0b6
Annotations
prefLabel Reflectivity
altLabel R, Reflectance
elucidation Capacity of an object to reflect light.
wikidataReference https://www.wikidata.org/wiki/Q663650
wikipediaReference https://en.wikipedia.org/wiki/Reflectance
Formal description
subClassOf PhysicalQuantity, Property
Subclasses LocalReflectivity
Restrictions

Remanence#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_8fc78216-4859-53c2-b41e-e38062b04054
Annotations
prefLabel Remanence
altLabel Mr, RemanentMagnetisation, RemanentMagnetization
elucidation The remanence Mr which remains when the applied field is
restored to zero in the hysteresis loop
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-02-40
wikidataReference https://www.wikidata.org/wiki/Q4150950
wikipediaReference https://en.wikipedia.org/wiki/Remanence
Formal description
subClassOf ElectromagneticQuantity
Restrictions

RemanentMagneticPolarization#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_538226cb-bebb-53e5-bf37-0f12226228be
Annotations
prefLabel RemanentMagneticPolarization
altLabel Jr, RemanentMagneticPolarisation
elucidation The remanent magnetic polarization Jr which remains when the applied
field is restored to zero in the hysteresis loop
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-02-39
Formal description
subClassOf ElectromagneticQuantity
Restrictions

SampleGeometry#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_b7ebd85f-36aa-540a-b8a9-e2c1094f27f1
Annotations
prefLabel SampleGeometry
elucidation The size and shape of the magnet
Formal description
subClassOf Referent, Property
Restrictions

SaturationMagneticPolarization#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_8ae216ed-64f9-55a0-b46f-27be41dda192
Annotations
prefLabel SaturationMagneticPolarization
altLabel Jsat, SaturationMagneticPolarisation
elucidation The Saturation magnetic polarization Jsat is the maximum
obtainable magnetic polarization for a given substance
at a given temperature. Jsat should be used instead of Js to avoid
confusion with the symbol for the spontaneous polarization
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-01-05
Formal description
subClassOf ElectromagneticQuantity
Restrictions

SaturationMagnetization#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_a3933eee-6ab1-5b7b-a21c-4e58bf64a830
Annotations
prefLabel SaturationMagnetization
altLabel Msat, SaturationMagnetisation
elucidation The Saturation magnetization Msat is the maximum
obtainable magnetic magnetization for a given substance
at a given temperature. Msat should be used instead Ms to avoid
confusion with the symbol for the SpontaneousMagnetization
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-01-04
wikidataReference https://www.wikidata.org/wiki/Q2630994
wikipediaReference https://en.wikipedia.org/wiki/Saturation_(magnetic)
Formal description
subClassOf ElectromagneticQuantity
Restrictions

SecondaryPhase#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5394673b-027e-5afc-bc6f-f72df5ed40a1
Annotations
prefLabel SecondaryPhase
elucidation An additional phase within a magnet, for example soft inclusions
or triple junctions.
Formal description
subClassOf Material, PhaseOfMatter, Referent
Subclasses GrainBoundaryPhase
Restrictions

ShapeAnisotropy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_f8f03807-d6b6-5ebf-8e0b-418311e8e1e5
Annotations
prefLabel ShapeAnisotropy
elucidation The difference in magnetostatic energy when an elongated particle
is magnetized along its short and long axis.
Formal description
subClassOf Referent, MagneticAnisotropy
Restrictions

ShapeAnisotropyConstant#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_ac6edd90-c273-5203-836b-82462863f2c8
Annotations
prefLabel ShapeAnisotropyConstant
altLabel K1sh
elucidation The energy density of a small particle given by

K1sh = (mu_0/4)(1-3D)Ms²

where mu_0 is the vacuum magnetic permeability and D is the
DemagnetizingFactor and Ms is the spontaneous magnetization.
Formal description
subClassOf EnergyDensity

SigmaGrainSize#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5a48bd5a-20ee-5399-ac29-c488c1c7ad73
Annotations
prefLabel SigmaGrainSize
elucidation The standard deviation of the grain diameter of grains. Diameter is
the diameter of a sphere with equivalent volume.
Formal description
subClassOf Length

SpaceGroup#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_5d5fbcc0-2738-5cb8-9157-a0fbe50eebb6
Annotations
prefLabel SpaceGroup
elucidation A spacegroup is the symmetry group of all symmetry operations
that apply to a crystal structure.

The complete symmetry of a crystal, including the Bravais lattice and
any translational symmetry elements, is given by one of the 240 space
groups.

A space group is identified by its Hermann-Mauguin symbol or space
group number (and setting) in the International tables of
Crystallography.
wikidataReference https://www.wikidata.org/wiki/Q899033
wikipediaReference https://en.wikipedia.org/wiki/Space_group
Formal description
subClassOf StringData, Information, NominalProperty
Restrictions

SpacerLayer#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_1b980f86-4116-5af8-bc45-14b44d88eeb5
Annotations
prefLabel SpacerLayer
elucidation Nonmagnetic thin film materials.
Formal description
subClassOf Material, Referent
Restrictions

SpontaneousMagneticPolarization#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_db6f7b13-1f1d-584f-9d73-47939b86a7cd
Annotations
prefLabel SpontaneousMagneticPolarization
altLabel Js, SpontaneousMagneticPolarisation
elucidation The spontaneous magnetic polarization, Js, of a ferromagnet is the
result of alignment of the magnetic moments of individual atoms.
Js exists within a domain of a ferromagnet.
Formal description
subClassOf ElectromagneticQuantity
Restrictions

SpontaneousMagnetization#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_032731f8-874d-5efb-9c9d-6dafaa17ef25
Annotations
prefLabel SpontaneousMagnetization
altLabel Ms, SpontaneousMagnetisation
elucidation The spontaneous magnetization, Ms, of a ferromagnet is the result
of alignment of the magnetic moments of individual atoms. Ms exists
within a domain of a ferromagnet.
IECEntry https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=221-02-41
wikipediaReference https://en.wikipedia.org/wiki/Spontaneous_magnetization
Formal description
subClassOf ElectromagneticQuantity
Restrictions

StackingSequence#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_0296829f-f39b-5c0d-9a5c-045a7b8364c6
Annotations
prefLabel StackingSequence
elucidation Sequence of layers in a multilayer stack.
Formal description
subClassOf StringData, Information, NominalProperty
Restrictions

SwitchingFieldCoercivity#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_bc54c47f-8560-516a-b95b-cce9f1b7344f
Annotations
prefLabel SwitchingFieldCoercivity
altLabel Hsw
elucidation Defined by the maximum slope of the descending branch of
the M-H hysteresis loop, with H the internal field.
Formal description
subClassOf MagneticFieldStrength

SwitchingFieldCoercivityExternal#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_234a6193-f057-556f-bfcd-38efde3aafc4
Annotations
prefLabel SwitchingFieldCoercivityExternal
altLabel H'sw
elucidation Defined by the maximum slope of the descending branch of
the M-H' hysteresis loop, with H' the external field.
Formal description
subClassOf MagneticFieldStrength

ThinFilmMagnet#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_6f92a0d5-2eae-5ceb-83dc-2fef7c41a1dd
Annotations
prefLabel ThinFilmMagnet
elucidation Piece of matter made of one or more magnetic material
in form a thin film.
Formal description
subClassOf MaterialBySize, Magnet
Restrictions

UniaxialAnisotropyConstant#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_49a882d1-9ce7-522b-91e7-3a460f25f5ac
Annotations
prefLabel UniaxialAnisotropyConstant
altLabel Ku
elucidation The change of energy with angle of the magnetization from
the preferred direction is expressed with the
uniaxial anisotropy constant Ea = Ku sin²(theta).
Formal description
subClassOf EnergyDensity

UniaxialMagneticAnisotropy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_6d90a9fe-5ff3-563b-b33b-ae5a4e1a88d8
Annotations
prefLabel UniaxialMagneticAnisotropy
elucidation The anisotropy can be described as uniaxial when the anisotropy
energy E depends on only a single angle, the angle between the
magnetization vector and the easy direction of magnetization.
Formal description
subClassOf Referent, MagneticAnisotropy
Subclasses UniaxialMagnetocrystallineAnisotropy, InducedMagneticAnisotropy
Restrictions

UniaxialMagnetocrystallineAnisotropy#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_70efe904-df98-5f7c-9f45-45af722dfeb7
Annotations
prefLabel UniaxialMagnetocrystallineAnisotropy
elucidation The uniaxial anisotropy depends on only a single angle, the angle
magnetization vector and the c axis.
Formal description
subClassOf UniaxialMagneticAnisotropy
Restrictions

XrayDiffractionData#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_38684bd3-8137-5af1-9c0d-b32bcf58fefc
Annotations
prefLabel XrayDiffractionData
elucidation Counts as a function of 2theta angle obtained from X-ray
diffraction.
Formal description
subClassOf Matrix, Information, Referent, Property
Subclasses LocalXrayDiffractionData
Restrictions

Xrd2dImage#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_cb1493e6-30a1-5c41-aec0-12ce41296469
Annotations
prefLabel Xrd2dImage
altLabel XRD2DImage, XRD2dImage, Xrd2DImage
elucidation 2D array containing all pixel intensities from a 2D XRD camera.
This is the raw XRD data from which 1D spectra are obtained.
Formal description
subClassOf PhysicalQuantity, Matrix, Information, Property
Restrictions

XrdCounts#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_df2f8079-b925-5b36-aa55-3a58392d12d3
Annotations
prefLabel XrdCounts
altLabel XRDCounts
elucidation Counts as a function of 2theta angle obtained from X-ray
diffraction.
Formal description
subClassOf PhysicalQuantity, Vector, Information
Restrictions

XrdTwoThetaAngles#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_56e8434d-4ecf-50e2-94a9-b854065c3393
Annotations
prefLabel XrdTwoThetaAngles
altLabel XRDTwoThetaAngles
elucidation The 2theta angles at which the counts are measured during X-ray
diffraction.
Formal description
subClassOf Vector, Referent
Restrictions

Annotation Properties#

IECEntry#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_eb748e96-0aee-5b55-b6be-56b8c6bdaed6
Annotations
prefLabel IECEntry
Formal description
subPropertyOf AnnotationProperty

wikidataReference#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_4d45da04-cf90-5d4a-bc11-f76fbd5b5036
Annotations
prefLabel wikidataReference
Formal description
subPropertyOf AnnotationProperty

wikipediaReference#

IRI https://w3id.org/emmo/domain/magnetic-materials#EMMO_405ae501-8898-59c0-b2db-0afa09d561f9
Annotations
prefLabel wikipediaReference
Formal description
subPropertyOf AnnotationProperty
Reference Indices