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

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Page 68

Then the symmetry group R

be calculated from eqs. ... to satisfy the corresponding symmetry relations and

therefore they can be

.

Then the symmetry group R

**represents**axial symmetry, and the free energy canbe calculated from eqs. ... to satisfy the corresponding symmetry relations and

therefore they can be

**represented**as follows: Taon(9) F. Aff; y Tozo(3) = Aff; y Too.

Page 99

Generally, the Hamiltonian

crystal lattice can be expressed in ... + 3% -- 9%. , where 3%

Hamiltonian of the free ion, 3%, consists of several contributions and determines

the ...

Generally, the Hamiltonian

**representing**the total energy of a magnetic ion in thecrystal lattice can be expressed in ... + 3% -- 9%. , where 3%

**represents**theHamiltonian of the free ion, 3%, consists of several contributions and determines

the ...

Page 193

Final positions X., of bubbles are indicated by triangles, while the dashed line at

2.4 pm

lines at any point in the overshoot phase is therefore

, ...

Final positions X., of bubbles are indicated by triangles, while the dashed line at

2.4 pm

**represents**the bubble position X, ... and fixed T. The number of Blochlines at any point in the overshoot phase is therefore

**represented**by the value of j, ...

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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

### References to this book

Structural and Magnetic Phase Transitions in Minerals S. Ghose,J.M.D. Coey,E. Salje Snippet view - 1988 |