## Physical Properties of Crystals |

### From inside the book

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Page 106

The strain produced by a stress (elasticity) or an electric field (piezoelectricity)

need not conform to the symmetry of the crystal unless the strain or the field itself

conforms. The strain caused by a temperature change (

the ...

The strain produced by a stress (elasticity) or an electric field (piezoelectricity)

need not conform to the symmetry of the crystal unless the strain or the field itself

conforms. The strain caused by a temperature change (

**thermal expansion**), onthe ...

Page 107

The coefficient of volume (bulk) expansion is (o.1+o, +oa) or, in general, ott,

which is an invariant. The principal

substances are all positive, and the

ellipsoid, ...

The coefficient of volume (bulk) expansion is (o.1+o, +oa) or, in general, ott,

which is an invariant. The principal

**thermal expansion**coefficients for mostsubstances are all positive, and the

**thermal expansion**quadric is accordingly anellipsoid, ...

Page 109

SUMMARY OF $ 5

uniformly by an amount AT, the crystal undergoes a homogeneous strain given

by eij = 0;; AT, where the ot; are the coefficients of

SUMMARY OF $ 5

**Thermal expansion**. If the temperature of a crystal is raiseduniformly by an amount AT, the crystal undergoes a homogeneous strain given

by eij = 0;; AT, where the ot; are the coefficients of

**thermal expansion**. [at] is a ...### What people are saying - Write a review

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### Contents

THE GROUND WORK OF CRYSTAL PHYSICS | 3 |

Summary | 29 |

EQUILIBRIUM PROPERTIES | 45 |

47 other sections not shown

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### Common terms and phrases

angle anisotropic applied biaxial birefringence centre of symmetry Chapter conductivity constant crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dielectric direction cosines displacement elastic compliances electric field electro-optical electro-optical effect ellipsoid equal equation example expression follows forces given gives grad heat flow Hence indicatrix isothermal isotropic magnetic magnitude matrix notation measured moduli Mohr circle monoclinic number of independent Onsager's Principle optic axis optical activity orientation parallel permittivity perpendicular photoelastic effect piezoelectric effect plane plate polarization positive principal axes produced pyroelectric effect quadric radius vector referred refractive index relation representation quadric represents right-handed rotation scalar second-rank tensor shear shown shows strain stress symmetry elements Table temperature gradient thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law trigonal uniaxial unit volume values wave normal wave surface written zero