The effect of magnetization direction on excitations in a gamma 5 ground state system

Collective magnetic excitations are discussed for a J = 6 system of localized spins in a cubic crystal field with Γ 5 ground state interacting through isotropic Heisenberg exchange. It is found that the choice of zero-field magnetization direction is important for obtaining physically reasonable dis...

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Published inSolid state communications Vol. 70; no. 2; pp. 179 - 183
Main Authors Wentworth, C.D., Deutz, A.F.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.04.1989
Elsevier
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
General theory and models of magnetic ordering
Magnetic properties and materials
Materials science
Metals, semimetals and alloys
Other topics in magnetic properties and materials
Physics
Quantized spin models
Specific materials
Magnetization direction
Intermetallic compound
Exchange interaction
Laves phase
Theoretical study
Lanthanide Alloys
Crystal field
Green function
Binary alloy
Collective excitation
Magnetic properties
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Abstract Collective magnetic excitations are discussed for a J = 6 system of localized spins in a cubic crystal field with Γ 5 ground state interacting through isotropic Heisenberg exchange. It is found that the choice of zero-field magnetization direction is important for obtaining physically reasonable dispersion curves. The direction must be the easy-axis corresponding to the crystal field parameters used. Examples of dispersion curves in the ferromagnetically ordered phase with model parameters corresponding to TmAl 2 are given. The presence of an additional interaction in TmAl 2 is inferred.
AbstractList Collective magnetic excitations are discussed for a J = 6 system of localized spins in a cubic crystal field with Gamma sub 5 ground state interacting through isotropic Heisenberg exchange. It is found that the choice of zero-field magnetization direction is important for obtaining physically reasonable dispersion curves. The direction must be the easy-axis corresponding to the crystal field parameters used. Examples of dispersion curves in the ferromagnetically ordered phase with model parameters corresponding to TmAl sub 2 are given. The presence of an additional interaction in TmAl sub 2 is inferred. 10 ref.--AA
Collective magnetic excitations are discussed for a J = 6 system of localized spins in a cubic crystal field with Γ 5 ground state interacting through isotropic Heisenberg exchange. It is found that the choice of zero-field magnetization direction is important for obtaining physically reasonable dispersion curves. The direction must be the easy-axis corresponding to the crystal field parameters used. Examples of dispersion curves in the ferromagnetically ordered phase with model parameters corresponding to TmAl 2 are given. The presence of an additional interaction in TmAl 2 is inferred.
Author Deutz, A.F.
Wentworth, C.D.
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Cites_doi 10.1016/0022-3697(62)90192-0
10.1016/0038-1098(88)90068-3
10.1103/PhysRevB.9.3797
10.1103/PhysRevB.19.2729
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Issue 2
Keywords Magnetization direction
Intermetallic compound
Exchange interaction
Laves phase
Theoretical study
Lanthanide Alloys
Crystal field
Green function
Binary alloy
Collective excitation
Magnetic properties
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10.1016/0038-1098(89)90970-8_BIB2
Hutchings (10.1016/0038-1098(89)90970-8_BIB5) 1964
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Snippet Collective magnetic excitations are discussed for a J = 6 system of localized spins in a cubic crystal field with Γ 5 ground state interacting through...
Collective magnetic excitations are discussed for a J = 6 system of localized spins in a cubic crystal field with Gamma sub 5 ground state interacting through...
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SubjectTerms Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
General theory and models of magnetic ordering
Magnetic properties and materials
Materials science
Metals, semimetals and alloys
Other topics in magnetic properties and materials
Physics
Quantized spin models
Specific materials
Title The effect of magnetization direction on excitations in a gamma 5 ground state system
URI https://dx.doi.org/10.1016/0038-1098(89)90970-8
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