Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 343
... matrix elements of the absorption are linear with respect to e , so that the absorption probability is generally of the form ΣA ,, E ) . ε ( r ) ap a Hence , by imposing invariance with respect to the transformation εν → εexp [ -iqy ...
... matrix elements of the absorption are linear with respect to e , so that the absorption probability is generally of the form ΣA ,, E ) . ε ( r ) ap a Hence , by imposing invariance with respect to the transformation εν → εexp [ -iqy ...
Page 473
... matrix elements [ 17 ] of the transformed in in the basis of eigenstates of ( 12 ) , i.e. { SM , ) } ( S = 2 ) quantized along the z - axis . We obtain with accuracy to second- [ all terms except BB considered ] and third- [ only ( B ) ...
... matrix elements [ 17 ] of the transformed in in the basis of eigenstates of ( 12 ) , i.e. { SM , ) } ( S = 2 ) quantized along the z - axis . We obtain with accuracy to second- [ all terms except BB considered ] and third- [ only ( B ) ...
Page 475
... matrix elements of L ( ) and O12 ( Û ) ( Â ̧ ) in the new basis { P } . 3 ) From the general spin Hamiltonian expressions discussed in part I , sect . 4 , we are able to estimate numerically the parameters B , however now the problem is ...
... matrix elements of L ( ) and O12 ( Û ) ( Â ̧ ) in the new basis { P } . 3 ) From the general spin Hamiltonian expressions discussed in part I , sect . 4 , we are able to estimate numerically the parameters B , however now the problem is ...
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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