## Introduction to Solid State Physics |

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Page 74

9 ) valid for the

upper limit to the integral , wm , is here to be determined by the condition that the

number of states considered should come out

as ...

9 ) valid for the

**equivalent**homogeneous line . In this approximation dk ... Theupper limit to the integral , wm , is here to be determined by the condition that the

number of states considered should come out

**equal**to N = L / a . Now km = a / aas ...

Page 244

in electron - phonon collisions will be

Tep with tpp , we see that under the conditions specified phonons in a metal may

have considerably shorter relaxation times than phonons in a dielectric solid .

in electron - phonon collisions will be

**equal**to rep as just estimated . ComparingTep with tpp , we see that under the conditions specified phonons in a metal may

have considerably shorter relaxation times than phonons in a dielectric solid .

Page 304

If there are N atoms A and N atoms B in the alloy , the long range order

parameter S is defined so that the number of A ' s on lattice a is

. When S = + 1 , the order is perfect and each lattice contains only one type of

atom .

If there are N atoms A and N atoms B in the alloy , the long range order

parameter S is defined so that the number of A ' s on lattice a is

**equal**to * ( 1 + ) N. When S = + 1 , the order is perfect and each lattice contains only one type of

atom .

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### Contents

LATTICE ENERGY OF IONIC CRYSTALS | 29 |

ELASTIC CONSTANTS OF CRYSTALS | 43 |

LATTICE VIBRATIONS | 60 |

Copyright | |

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alloy applied approximation atoms axes axis band boundary calculated cell chapter charge chloride condition conductivity consider constant crystal cubic defined dependence determined dielectric diffusion direction discussed dislocations displacement distance distribution domains effect elastic electric electron energy equal equation equilibrium example excitation experimental expression factor field force frequency function given gives heat holes interaction ionic ions lattice levels London magnetic magnetic field material mean measurements mechanism metals method molecules motion negative neighbor normal observed obtained parallel particles Phys physical plane polarization positive possible potential problem properties quantum range reference reflection region relation resistivity result room temperature scattering Show shown in Fig sodium solids space specimen stress structure suppose Table temperature theory thermal tion transition unit usually vacancy values volume wave zero