Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 199
... Hamiltonian by allowing the applied field H , to be replaced by an effective field , Het , that determines the additional spin - orientation - dependent terms in the Hamiltonian [ 11 ] . The Hamiltonian for an assembly of exchange ...
... Hamiltonian by allowing the applied field H , to be replaced by an effective field , Het , that determines the additional spin - orientation - dependent terms in the Hamiltonian [ 11 ] . The Hamiltonian for an assembly of exchange ...
Page 209
If so , the B terms can be neglected and the Hamiltonian will be in diagonal form . This is the circular - precession approximation that will be referred to in later sections . k In the Hamiltonian of eq . ( 2.16 ) , the nondiagonal ...
If so , the B terms can be neglected and the Hamiltonian will be in diagonal form . This is the circular - precession approximation that will be referred to in later sections . k In the Hamiltonian of eq . ( 2.16 ) , the nondiagonal ...
Page 468
... Hamiltonian . To ) , the « quenching » of orbital element < æ¦à . > = 0 [ 7 ] . For has been introduced [ 1 , 2 , 5-7 ] . If the ground state is an orbital singlet angular ... Hamiltonian 468 CZ . RUDOWICZ Conventional spin Hamiltonian •
... Hamiltonian . To ) , the « quenching » of orbital element < æ¦à . > = 0 [ 7 ] . For has been introduced [ 1 , 2 , 5-7 ] . If the ground state is an orbital singlet angular ... Hamiltonian 468 CZ . RUDOWICZ Conventional spin Hamiltonian •
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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