## Electrodynamics of continuous mediaVolume 8. |

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Page 150

If the constant /3 is positive, the anisotropy energy is least when the

easy

the ary-plane, ...

If the constant /3 is positive, the anisotropy energy is least when the

**magnetisation**is in the ^-direction, and the ar-axis is said to be the direction ofeasy

**magnetisation**. If, however, j3 < 0, the direction of easy**magnetisation**lies inthe ary-plane, ...

Page 153

These are then the directions of easy

strictly speaking, a ferromagnetic cubic crystal, when spontaneously

along one of the directions of easy

These are then the directions of easy

**magnetisation**. It should be noticed that,strictly speaking, a ferromagnetic cubic crystal, when spontaneously

**magnetised**along one of the directions of easy

**magnetisation**, ceases to possess cubic ...Page 154

6t \ 3 / Rhombohedral symmetry admits this sixth-order term and also one

independent quartic combination, for example lMt[(Mx+iMv)3+(Mx-iMy)*] = MzMt(

Mz*-2My2). The determination of the direction of easy

plane ...

6t \ 3 / Rhombohedral symmetry admits this sixth-order term and also one

independent quartic combination, for example lMt[(Mx+iMv)3+(Mx-iMy)*] = MzMt(

Mz*-2My2). The determination of the direction of easy

**magnetisation**in the Ay-plane ...

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### Contents

ELECTROSTATICS OF CONDUCTORS 1 The electrostatic field of conductors | 1 |

2 The energy of the electrostatic field of conductors | 3 |

3 Methods of solving problems in electrostatics | 9 |

Copyright | |

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### Common terms and phrases

angle anisotropy atoms averaging axes axis body boundary condition calculated charge circuit co-ordinates coefficient components conducting conductor constant corresponding cross-section crystal Curie point curl curlH current density cylinder denote depends derivative determined dielectric permeability difference differentiating diffraction dipole direction discontinuity distance e(to effect electric field electromagnetic electrons electrostatic ellipsoid entropy equation expression external field external magnetic field ferroelectric ferromagnetic fluid flux force formula free energy frequency function given gives grad Hence induction integral isotropic Laplace's equation layer Let us consider linear macroscopic magnetic field magnetisation magnitude Maxwell's equations medium metal normal obtain optical particle perpendicular phase piezoelectric plane polarisation Problem propagation properties pyroelectric quantities radius refraction relation respect result rotation scalar scattering self-inductance Solution sphere suffixes superconducting surface symmetry tangential temperature theory thermodynamic equilibrium thermodynamic potential tion uniform unit volume values variable velocity wave vector wire zero