Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 43
... Fe3 + ion moments . Mn2 + also enters c - sites , but it appears either to remain paramagnetic down to 0 K or perhaps these ions are involved in short - range antiferromagnetism . The Ni2 + ions appear to prefer octahedral sites in YIG ...
... Fe3 + ion moments . Mn2 + also enters c - sites , but it appears either to remain paramagnetic down to 0 K or perhaps these ions are involved in short - range antiferromagnetism . The Ni2 + ions appear to prefer octahedral sites in YIG ...
Page 49
... Fe3 + ions , such that the 0.72 Fe3 + 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 ...
... Fe3 + ions , such that the 0.72 Fe3 + 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 ...
Page 366
... ferrous - ion properties is that of the proximity of the donor centres , which are responsible for the occurrence of ... ions excess negative charges . This has a number of consequences . First , the normal Coulomb attraction gives rise ...
... ferrous - ion properties is that of the proximity of the donor centres , which are responsible for the occurrence of ... ions excess negative charges . This has a number of consequences . First , the normal Coulomb attraction gives rise ...
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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