## Physical Properties of Crystals |

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Page 54

This is the reason for introducing pio into equation (2).f Since I refers to

susceptibility. When is is positive the substance is said to be paramagnetic; when

l is negative ...

This is the reason for introducing pio into equation (2).f Since I refers to

**unit****volume**, is in equation (2), although dimensionless, is called the volumesusceptibility. When is is positive the substance is said to be paramagnetic; when

l is negative ...

Page 149

John Frederick Nye. Other results. The work done per

a small change of strain in a crystal is dW = ori dei. (16) When the change is

isothermal and reversible dW may be equated with the increase in free energy d'

H'.

John Frederick Nye. Other results. The work done per

**unit volume**when there isa small change of strain in a crystal is dW = ori dei. (16) When the change is

isothermal and reversible dW may be equated with the increase in free energy d'

H'.

Page 175

Owing to the interplay between the four effects just described, the four differential

coefficients in equations (9) and (10) are not independent. To find the relations

between them we consider the energy of the system. Considering

we ...

Owing to the interplay between the four effects just described, the four differential

coefficients in equations (9) and (10) are not independent. To find the relations

between them we consider the energy of the system. Considering

**unit volume**,we ...

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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