## Physical Properties of Crystals: Their Representation by Tensors and Matrices |

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Page 64

with a:, parallel to the field, the symmetry of the field is such that on Oxt, Ht = Ht =

0. In equation(26), therefore, we need only consider the terms with fc = 1.

**forces**in this arrangement from equation (26). Taking axes as shown in Fig. 3.5 6,with a:, parallel to the field, the symmetry of the field is such that on Oxt, Ht = Ht =

0. In equation(26), therefore, we need only consider the terms with fc = 1.

Page 65

We have discussed the couple on a crystal in a uniform field and the

small volume of a crystal in a non-uniform field. In a non- uniform field there is

also a couple, but this is only partly due to the effect of anisotropy discussed in §

3.1.

We have discussed the couple on a crystal in a uniform field and the

**force**on asmall volume of a crystal in a non-uniform field. In a non- uniform field there is

also a couple, but this is only partly due to the effect of anisotropy discussed in §

3.1.

Page 83

to the axes Oxl, Ox2, Ox3. A

, exerted by the material outside the cube upon the material inside the cube. The

to the axes Oxl, Ox2, Ox3. A

**force**will be transmitted across each face of the cube, exerted by the material outside the cube upon the material inside the cube. The

**force**transmitted across each face may be resolved into three components.### What people are saying - Write a review

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### Contents

THE GROUNDWORK OF CRYSTAL PHYSICS | 3 |

EQUILIBRIUM PROPERTIES | 51 |

ELECTRIC POLARIZATION | 68 |

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### Common terms and phrases

angle anisotropic applied axial vector centre of symmetry Chapter coefficients conductivity constant crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dielectric direction cosines displacement dummy suffix electric field ellipsoid equal equation example expression follows force given heat flow Hence hexagonal homogeneous indicatrix isothermal isotropic left-handed length longitudinal magnetic magnitude matrix notation measured moduli monoclinic number of independent Onsager's Principle optical activity orientation parallel Peltier permittivity perpendicular photoelastic effect piezoelectric effect plane plate polarization positive principal axes produced pyroelectric pyroelectric effect quantities radius vector referred refractive refractive index relation representation quadric represented right-handed rotation scalar second-rank tensor set of axes shear stress suffix notation surface susceptibility symmetry elements Table temperature gradient tensile stress thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law trigonal uniaxial unit volume values written Young's Modulus zero