Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 26
... molecular - field coefficients . If the magnetic ions in both the d- and a - sites are Fe3 + , then Sa S .. If they ... molecular - field coefficients are generally obtained by trial and error computations . They are directly related to ...
... molecular - field coefficients . If the magnetic ions in both the d- and a - sites are Fe3 + , then Sa S .. If they ... molecular - field coefficients are generally obtained by trial and error computations . They are directly related to ...
Page 87
... molecular - field theory by ( 4.16 ) Un gμBS kT n H + Σλ.Μ. ) . M g , μ and S , represent the g - factor , the Bohr magneton and the spin of the n - th sublattice , respectively . H is the external magnetic field , 2n , are the molecular ...
... molecular - field theory by ( 4.16 ) Un gμBS kT n H + Σλ.Μ. ) . M g , μ and S , represent the g - factor , the Bohr magneton and the spin of the n - th sublattice , respectively . H is the external magnetic field , 2n , are the molecular ...
Page 199
... molecular field , HE , by the relation ( 1.14 ) where ( 1.15 ) HE = λM , 2 . = 2zJ / gu N is the Weiss - molecular - field parameter [ 13 ] . The ground - state energy density can be expressed in terms of the magnetization as ( 1.16 ) ...
... molecular field , HE , by the relation ( 1.14 ) where ( 1.15 ) HE = λM , 2 . = 2zJ / gu N is the Weiss - molecular - field parameter [ 13 ] . The ground - state energy density can be expressed in terms of the magnetization as ( 1.16 ) ...
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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