## Magnetism in Crystalline Materials: Applications of the Theory of Groups of Cambiant Symmetry |

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41 pages matching **classical point groups** in this book

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### Contents

The Structures of Magnetically Ordered Crystals | 35 |

The Theory of Corepresentations | 59 |

Magnetic Phase Transitions | 78 |

Copyright | |

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### Common terms and phrases

anisotropy anti-unitary elements antiferromagnetic atom or ion axial axis band structure belong black and white Bradley and Cracknell Bravais lattice Brillouin zone classical point groups coefficients components consider corepresentations crystal field crystallographic degeneracies determined direction dispersion relations electromagnetic energy equation example exchange interactions exciton external magnetic field ferroelectric ferromagnetic frequencies group G Hamiltonian Heesch-Shubnikov point groups illustrated in Fig infrared absorption involves irreducible representations Kronecker product labelled lattice vibrations magnetic crystal magnetic moments magnetic point groups magnetic space group magnetic structure magnetically ordered magnetically ordered crystal magnetically ordered phase magnon material MnF2 neutron non-magnetic normal modes obtained orientations paramagnetic paramagnetic phase phase transition phonon Phys polar properties Raman scattering reduction resonance selection rules solid space group specimen spin waves spin-orbit coupling spin-wave dispersion relations sublattice magnetization symmetry operations tensor of rank theory time-reversal tion two-magnon unit cell unitary subgroup values wave functions wave vector