Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 103
... exchange interaction now have to be regarded as pertur- bations , as indicated in ( 6.3 ) . Further , the exchange interaction is anisotropic , implying the exchange integrals to depend on the orbital - momentum oper- ator [ 130 ] ...
... exchange interaction now have to be regarded as pertur- bations , as indicated in ( 6.3 ) . Further , the exchange interaction is anisotropic , implying the exchange integrals to depend on the orbital - momentum oper- ator [ 130 ] ...
Page 215
... exchange - dominated surface modes . The surface waves having a pure imaginary propagation vector , k , id , are the acoustic surface spin waves , while the surface waves having a complex propagation vector , k1 = л / а + ið , πια where ...
... exchange - dominated surface modes . The surface waves having a pure imaginary propagation vector , k , id , are the acoustic surface spin waves , while the surface waves having a complex propagation vector , k1 = л / а + ið , πια where ...
Page 276
... exchange energy , which is increased because the atomic dipole moments no longer form collinear arrays , and from the magnetic self - energy associated with the nonzero divergence of M in the body of the sample due to the wave . The ...
... exchange energy , which is increased because the atomic dipole moments no longer form collinear arrays , and from the magnetic self - energy associated with the nonzero divergence of M in the body of the sample due to the wave . 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