Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 22
... ions with nonspherical electron configuration , canting of the rare - earth ion moments with respect to the net Fe3 + ion moment could be expected at low temperatures , caused by the crystal field . From the anisotropic g - values ...
... ions with nonspherical electron configuration , canting of the rare - earth ion moments with respect to the net Fe3 + ion moment could be expected at low temperatures , caused by the crystal field . From the anisotropic g - values ...
Page 23
... ions were deduced to be in two nonequivalent sets of sites , in both of which the Tb3 + ion moments make an angle of 30 ° with the [ 111 ] easy direc- tion at 1.5 K. The deduced moment is 8.5μ , with a component 7.35μ , paral- lel to ...
... ions were deduced to be in two nonequivalent sets of sites , in both of which the Tb3 + ion moments make an angle of 30 ° with the [ 111 ] easy direc- tion at 1.5 K. The deduced moment is 8.5μ , with a component 7.35μ , paral- lel to ...
Page 49
... ion moments are equivalent to 0.59 Fe3 + ion moments , further re- duces the Gd3 + ion contribution to 13.9μ . The difference in the effective Fe3 + ion moments is 5 [ 0.78 -0.72 0.82 ] μ 1.0μ . The net moment at 0 K is then 14.9μ . The ...
... ion moments are equivalent to 0.59 Fe3 + ion moments , further re- duces the Gd3 + ion contribution to 13.9μ . The difference in the effective Fe3 + ion moments is 5 [ 0.78 -0.72 0.82 ] μ 1.0μ . The net moment at 0 K is then 14.9μ . The ...
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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