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

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Page 277

H., is the steady magnetic field inside the sample, H, - = H, -N. M., where N. is the

relevant demagnetizing

emerges from these equations is sketched in fig. 3. An important feature is that

any spin ...

H., is the steady magnetic field inside the sample, H, - = H, -N. M., where N. is the

relevant demagnetizing

**factor**. The**form**of the spin wave manifold whichemerges from these equations is sketched in fig. 3. An important feature is that

any spin ...

Page 421

The temperature dependence of the drift mobility is of the

[- UskT], where U is the hopping energy. ... also the ionization energy of the

charge carriers from the appropriate donor or acceptor centres is a determining

The temperature dependence of the drift mobility is of the

**form**(12) a = u, To exp[- UskT], where U is the hopping energy. ... also the ionization energy of the

charge carriers from the appropriate donor or acceptor centres is a determining

**factor**.Page 473

imation [25] with the isotropic g

theory the energy spectrum in the

dependent terms, whereas P. has the same

symmetry.

imation [25] with the isotropic g

**factor**(g = 2): (12) *... = *. ... order perturbationtheory the energy spectrum in the

**form**E. = E. H. E. E. represents symmetry-dependent terms, whereas P. has the same

**form**for tetragonal and trigonalsymmetry.

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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