Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 198
... eigenvalues ( 1.5 ) For s S2 2 = s1 + s2 + 281 · §2 9 S ( 8 + 1 ) = 28 ( 8 + 1 ) +281 8 . - 1 , the operator ( 1.6 ) +281 82 will have the eigenvalues -1 and +1 in the states tively . and Y By m ant respec- Therefore the Hamiltonian for ...
... eigenvalues ( 1.5 ) For s S2 2 = s1 + s2 + 281 · §2 9 S ( 8 + 1 ) = 28 ( 8 + 1 ) +281 8 . - 1 , the operator ( 1.6 ) +281 82 will have the eigenvalues -1 and +1 in the states tively . and Y By m ant respec- Therefore the Hamiltonian for ...
Page 207
... eigenvalues of the operators are the number of spin waves n having wave vector k . When this transformation is inserted into H , a typical term becomes HP ' ( 2.14 ) 28 Σ Β , α , α , ij 1 2N Σου i > j kk ' j bubu Σ exp [ i ( k + k ...
... eigenvalues of the operators are the number of spin waves n having wave vector k . When this transformation is inserted into H , a typical term becomes HP ' ( 2.14 ) 28 Σ Β , α , α , ij 1 2N Σου i > j kk ' j bubu Σ exp [ i ( k + k ...
Page 210
... eigenvalues will be ( 2.29 ) E = ninN 1 k C - Σ 4 + Σε ( κ + 1 ) . k k This last transformation is from the original co - ordinate system in which the spins have an elliptical precession into a co - ordinate system where the precession ...
... eigenvalues will be ( 2.29 ) E = ninN 1 k C - Σ 4 + Σε ( κ + 1 ) . k k This last transformation is from the original co - ordinate system in which the spins have an elliptical precession into a co - ordinate system where the precession ...
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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