## Introduction to Solid State Physics |

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Page 61

It is plausible that the velocity should

with the density . The solutions are of the form ei ( wiłku ) , where w = kvo . The

quantity k is equal to 27 / 1 if is the wavelength ; k is usually called the wave

vector .

It is plausible that the velocity should

**increase**with the stiffness and decreasewith the density . The solutions are of the form ei ( wiłku ) , where w = kvo . The

quantity k is equal to 27 / 1 if is the wavelength ; k is usually called the wave

vector .

Page 309

The

then N ' ! ( 15 . 17 ) S = k log ww ' = k | log 7 : + log — _ ~ _ . ( N − n ) ! n ! • ( N ' –

n ) ! n ! N ! Using Stirling ' s formula , we have for the free energy ( 15 . 18 ) F = U ...

The

**increase**in entropy of the crystal through the creation of n Frenkel defects isthen N ' ! ( 15 . 17 ) S = k log ww ' = k | log 7 : + log — _ ~ _ . ( N − n ) ! n ! • ( N ' –

n ) ! n ! N ! Using Stirling ' s formula , we have for the free energy ( 15 . 18 ) F = U ...

Page 309

The

then ( 15 . 17 ) S = k log ww ' = k log 7 ( N N ! − n ) ! n ! " N ' ! mit 10 % ( N ' – n ) !

n ! ] Using Stirling ' s formula , we have for the free energy ( 15 . 18 ) F = U – TS ...

The

**increase**in entropy of the crystal through the creation of n Frenkel defects isthen ( 15 . 17 ) S = k log ww ' = k log 7 ( N N ! − n ) ! n ! " N ' ! mit 10 % ( N ' – n ) !

n ! ] Using Stirling ' s formula , we have for the free energy ( 15 . 18 ) F = U – TS ...

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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