Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 421
... charge carrier and the lattice is strong and the band is narrow , the charge carrier can be trapped in its own self - generated polarization field in the ionic lattice . This is the case of the small polaron , where the charge carrier ...
... charge carrier and the lattice is strong and the band is narrow , the charge carrier can be trapped in its own self - generated polarization field in the ionic lattice . This is the case of the small polaron , where the charge carrier ...
Page 455
... charge transfer between O2 and Fe3 + [ 11 , 19 , 31-33 ] , but there is now good cause to doubt this assignment . Recently it has been shown that all these transitions exhibit oscillator strengths which are de- pendent on Fe3 + ...
... charge transfer between O2 and Fe3 + [ 11 , 19 , 31-33 ] , but there is now good cause to doubt this assignment . Recently it has been shown that all these transitions exhibit oscillator strengths which are de- pendent on Fe3 + ...
Page 458
... charge transfer from the oxygen 2p band onto the octahedral Fe3 + sublattice . The fact that Fe3 + in Y , Ga , O12 has a strong octahedral - site preference also indicates - 12 TABLE IV . Comparison of transition energies and oscillator ...
... charge transfer from the oxygen 2p band onto the octahedral Fe3 + sublattice . The fact that Fe3 + in Y , Ga , O12 has a strong octahedral - site preference also indicates - 12 TABLE IV . Comparison of transition energies and oscillator ...
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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