Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 103
... quantities can be assumed to be small as indicated in ( 6.3 ) , and , therefore , may be expanded in a Taylor series as ( 6.9 ) Ερα JV ( r , c ) Σερα JJ is ( E ) ε pq + Θερα SV ( r , € ) = Σ 1,9 SJ ¡ ; ( E ) = Σ 2,9 ij + ... 9 ..... The ...
... quantities can be assumed to be small as indicated in ( 6.3 ) , and , therefore , may be expanded in a Taylor series as ( 6.9 ) Ερα JV ( r , c ) Σερα JJ is ( E ) ε pq + Θερα SV ( r , € ) = Σ 1,9 SJ ¡ ; ( E ) = Σ 2,9 ij + ... 9 ..... The ...
Page 120
... quantities AE100 and 7 defined in eq . ( 8.6 ) , the temperature dependence of the magnetostriction constants for ions occupying octahedral sites can be expressed by [ 131 , 139 , 168 ] λ1c0 ( T ) = 2100 ( 0 ) q ( T ) tgh AE100 2kT ...
... quantities AE100 and 7 defined in eq . ( 8.6 ) , the temperature dependence of the magnetostriction constants for ions occupying octahedral sites can be expressed by [ 131 , 139 , 168 ] λ1c0 ( T ) = 2100 ( 0 ) q ( T ) tgh AE100 2kT ...
Page 321
... quantities . 12. Photoinduced effects with change of symmetry ( photoinduced anisotropy effects ) . - Belonging to this category is the very first experiment in which photo- magnetic phenomena have been observed by TEALE and TEMPLE [ 1 ] ...
... quantities . 12. Photoinduced effects with change of symmetry ( photoinduced anisotropy effects ) . - Belonging to this category is the very first experiment in which photo- magnetic phenomena have been observed by TEALE and TEMPLE [ 1 ] ...
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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