Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 85
... excitation causes a local deviation of the spin direction from the average direction of magnetization , giving rise ... functions f ( T ) can be derived from classical statistics and connected to the temperature behaviour of the satura ...
... excitation causes a local deviation of the spin direction from the average direction of magnetization , giving rise ... functions f ( T ) can be derived from classical statistics and connected to the temperature behaviour of the satura ...
Page 282
... function of temperature between helium temperatures and 400 K. The result , shown in fig . 6 , is satisfactorily interpreted in terms of a process in which a mechanical lattice wave couples with the excited ... excitation , to form a higher- ...
... function of temperature between helium temperatures and 400 K. The result , shown in fig . 6 , is satisfactorily interpreted in terms of a process in which a mechanical lattice wave couples with the excited ... excitation , to form a higher- ...
Page 451
... excitation between the crystal field split levels of Fe3 + [ 8 , 9 ] which ... function of crystal field strength Dq : a ) octahedral : B = 530 cm - 1 , C ... excited state , the spin must not change . The Fe3 + ion THE OPTICAL ABSORPTION ...
... excitation between the crystal field split levels of Fe3 + [ 8 , 9 ] which ... function of crystal field strength Dq : a ) octahedral : B = 530 cm - 1 , C ... excited state , the spin must not change . The Fe3 + ion THE OPTICAL ABSORPTION ...
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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