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

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Results 1-3 of 6

Page 200

(1.18) can be expressed in terms of the single-particle spin-up

1.19) 'P = x, x, x, ... 2, . This is the state realized at 0 K and represents the

maximum alignment of spins or complete magnetization. As the temperature

increases, ...

(1.18) can be expressed in terms of the single-particle spin-up

**eigenstates**2, as (1.19) 'P = x, x, x, ... 2, . This is the state realized at 0 K and represents the

maximum alignment of spins or complete magnetization. As the temperature

increases, ...

Page 216

To determine the

precession approximation, four consecutive canonical transformations are

undertaken. The first transforms the spin operators from the crystallographic X, Y,

Z axes 216 ...

To determine the

**eigenstates**of the Hamiltonian, eq. (4.1), in the circular-precession approximation, four consecutive canonical transformations are

undertaken. The first transforms the spin operators from the crystallographic X, Y,

Z axes 216 ...

Page 343

Thus we resolve the polarization state of the incident photon into the + 1, 0 and –

1

resulting amplitudes. Furthermore, let e, and e_ be the amplitudes defining the ...

Thus we resolve the polarization state of the incident photon into the + 1, 0 and –

1

**eigenstates**of the spin component along is,. Let e.” (q = + 1, 0, − 1) be theresulting amplitudes. Furthermore, let e, and e_ be the amplitudes defining the ...

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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