## Introduction to Solid State Physicsproblems after each chapter |

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Page 65

type to atoms of a second type , so that the crystal is made up of positive and

negative

**IONIC**CRYSTALS In**ionic**crystals electrons are transferred from atoms of onetype to atoms of a second type , so that the crystal is made up of positive and

negative

**ions**. The**ions**arrange themselves so the Coulomb attraction between**ions**...Page 71

energy of an

negative

attractive part of the potential energy of the two

energy of an

**ionic**crystal . The distance between a positive**ion**and the nearestnegative

**ion**in sodium chloride is known to be 2 . 81 x 10 - 8 cm , so that theattractive part of the potential energy of the two

**ions**by themselves is fo / ro = ( 4 .Page 74

3 ) , Q = ) ( + ) pij , where now , if we take the reference

the plus sign will be used for positive

An equivalent definition is a _ s ' ( ) ( 3 . 6 ) Ro rj where r ; is the distance of the ...

3 ) , Q = ) ( + ) pij , where now , if we take the reference

**ion**as a negative charge ,the plus sign will be used for positive

**ions**and the minus sign for negative**ions**.An equivalent definition is a _ s ' ( ) ( 3 . 6 ) Ro rj where r ; is the distance of the ...

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### Contents

DIFFRACTION OF XRAYS BY CRYSTALS | 44 |

CLASSIFICATION OF SOLIDS LATTICE ENERGY | 63 |

ELASTIC CONSTANTS OF CRYSTALS | 85 |

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alloys applied approximately associated atoms axis band boundary calculated cell chapter charge concentration condition conductivity consider constant crystal cubic density dependence determined dielectric diffusion direction discussion dislocation distribution domain effect elastic electric electron elements energy equal equation equilibrium experimental expression factor field force frequency function germanium give given heat capacity hexagonal holes important impurity increase interaction ionic ions lattice levels London magnetic mass material measurements metals method motion neighbor normal observed obtained parallel particles Phys physics plane polarization positive possible potential present problem properties range reference reflection region relation resistivity result room temperature rotation shown in Fig simple solid solution space space group specimen structure surface symmetry Table temperature theory thermal tion transition unit usually values vector volume wave zero zone