## Physical Properties of Crystals |

### From inside the book

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Page 81

(Rochelle salt is unusual in having a lower as well as an upper transition

temperature; it only

temperatures.) A crystal in its ferroelectric state, with a spontaneous polarization,

must be of lower ...

(Rochelle salt is unusual in having a lower as well as an upper transition

temperature; it only

**shows**spontaneous polarization between thesetemperatures.) A crystal in its ferroelectric state, with a spontaneous polarization,

must be of lower ...

Page 171

One

while the other

by a stress. The two horizontal lines at the bottom

One

**shows**thermal expansion, the strain produced by a change of temperature,while the other

**shows**the piezocaloric effect, that is, the entropy (heat) producedby a stress. The two horizontal lines at the bottom

**show**that entropy (heat) is ...Page 309

Inspection

9"a o which is zero, by (18). Hence Bía – 0. It follows that z and 24 are the

principal axes of the elliptical section. We must now

Inspection

**shows**that this expression is identically equal to vof(v*)—w"f(v**) ty'3–9"a o which is zero, by (18). Hence Bía – 0. It follows that z and 24 are the

principal axes of the elliptical section. We must now

**show**that the lengths of the ...### 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