Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 84
... coupling , c ) anisotropic exchange . Further sources for anisotropic interactions are discussed in [ 98 ] . The dipolar interaction is expected to be of minor importance for garnets , since , from the restrictions imposed by the ...
... coupling , c ) anisotropic exchange . Further sources for anisotropic interactions are discussed in [ 98 ] . The dipolar interaction is expected to be of minor importance for garnets , since , from the restrictions imposed by the ...
Page 99
... coupling , where and s are the orbital and spin momentum operators of the k - th electron , respectively , and ( r ) is the corresponding one - electron spin - orbit coupling parameter . The last term represents the exchange interaction ...
... coupling , where and s are the orbital and spin momentum operators of the k - th electron , respectively , and ( r ) is the corresponding one - electron spin - orbit coupling parameter . The last term represents the exchange interaction ...
Page 102
... coupling constant and the magnitude of a ( 1 << 3 ) depends on the relative magnitude of the crystal fields [ 128 ] . For ions with an A or E ground state with S > 2 the spin - orbit coupling contributes only in second- or higher ...
... coupling constant and the magnitude of a ( 1 << 3 ) depends on the relative magnitude of the crystal fields [ 128 ] . For ions with an A or E ground state with S > 2 the spin - orbit coupling contributes only in second- or higher ...
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Common terms and phrases
absorption angle anisotropy constants antiferromagnetic Appl axis birefringence Bloch lines Bloch point bubble calculated cation cm-¹ Co² Co³ coefficient concentration contribution crystal field cubic Curie temperature curve diamagnetic dichroism direction of magnetization domain wall effects electron energy levels equations exchange experimental Fe2+ Fe³ ferrimagnetic ferromagnetic resonance film formula unit frequency GELLER GILLEO given Hamiltonian interaction ion moments Journ K₁ lattice constant line width linear magnetic anisotropy magnetic field magneto-optical magnetoelastic magnons measurements modes neutron diffraction observed obtained octahedral octahedral sites optical orbital oxygen paramagnetic parameters phonons photoinduced photomagnetic Phys polarization polycrystalline properties rare-earth ions rare-earth iron garnets relaxation resonance room temperature rotation sample shown in fig sin² specimens spin wave spin-orbit coupling spontaneous magnetization sublattice substitution surface symmetry temperature dependence tetrahedral theory tion torque transitions uniaxial anisotropy valence values vector velocity yttrium iron garnet