Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 104
... levels thus is a clear indication for the magnitude of anisotropic phenomena such as magnetic anisotropy , magnetostriction , or relaxation mechanisms . - B If we apply the Hamiltonians given in sect . 6 to a suitable set of wave ...
... levels thus is a clear indication for the magnitude of anisotropic phenomena such as magnetic anisotropy , magnetostriction , or relaxation mechanisms . - B If we apply the Hamiltonians given in sect . 6 to a suitable set of wave ...
Page 107
... levels behave like a magnetic doublet , which , in addition , is well separated from the higher levels . In contrast to the Co2 + ions , near crossings of the lowest levels , which induce sharp peaks in the field for ferromagnetic ...
... levels behave like a magnetic doublet , which , in addition , is well separated from the higher levels . In contrast to the Co2 + ions , near crossings of the lowest levels , which induce sharp peaks in the field for ferromagnetic ...
Page 108
... levels exhibit a similar strong variation . This level structure has been cal- culated by using the Hamiltonian ( 6.2 ) and by assuming an isotropic exchange interaction . On the basis of the level diagrams for the magnetically ...
... levels exhibit a similar strong variation . This level structure has been cal- culated by using the Hamiltonian ( 6.2 ) and by assuming an isotropic exchange interaction . On the basis of the level diagrams for the magnetically ...
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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