## Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |

### From inside the book

Results 1-3 of 12

Page 102

For ions with an A or E ground state with S > 2 the spin-orbit coupling contributes

only in second- or higher-order

6.4) can be re-expressed in terms of a pure spin Hamiltonian, yielding (6.6) .7% ...

For ions with an A or E ground state with S > 2 the spin-orbit coupling contributes

only in second- or higher-order

**perturbation**theory, and then the Hamiltonian (6.4) can be re-expressed in terms of a pure spin Hamiltonian, yielding (6.6) .7% ...

Page 256

The bending of the ground-state magnetization near the film surface will produce

a

torque on the magnetization that is appreciable within a region of a few decay ...

The bending of the ground-state magnetization near the film surface will produce

a

**perturbation**on the energy density in the surface region causing an additionaltorque on the magnetization that is appreciable within a region of a few decay ...

Page 473

Hence, to resolve the energy spectrum of the ground singlet we can treat J%, (6)

as a

microscopic expressions for the single-ion cubic anisotropy constants Ki and K, ...

Hence, to resolve the energy spectrum of the ground singlet we can treat J%, (6)

as a

**perturbation**to 3%. , (12). 2. – Theory for spin S = 2. The derivation of themicroscopic expressions for the single-ion cubic anisotropy constants Ki and K, ...

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### Contents

Gruppo fotografico dei partecipanti al Corso fuori testo | 1 |

Octahedral sites | 3 |

Hightemperature results | 4 |

Copyright | |

34 other sections not shown

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### Common terms and phrases

absorption angle anisotropy constants anisotropy energy annealing antiferromagnetic Appl axis Bloch lines Bloch point Bloch wall Bloch-line bubble calculated coefficients compensation point contribution Cošt crystal field cubic Curie temperature curve d-site diamagnetic dichroism direction of magnetization domain wall effects electron energy levels equation exchange experimental Fe2+ Fe3+ ions ferromagnetic resonance formula unit frequency gadolinium Gd3+ ion GELLER GILLEo given Hamiltonian interaction ion moments Journ lattice constant line width linear magnetic field magnetic ions magnetoelastic magnetostriction constants measurements neutron diffraction observed octahedral octahedral sites orientation parameter phonons photoinduced photomagnetic Phys plane polarization rare-earth ions rare-earth iron garnets relaxation respectively room temperature rotation sample shown in fig specimens spin wave spontaneous magnetization sublattice substitution symmetry temperature dependence temperature variation tetrahedral theory tion torque transition uniaxial anisotropy valence values vector velocity yttrium iron garnet