## Introduction to Solid State Physicsproblems after each chapter. |

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The

rather tedious, and instead we shall treat fairly completely the theory of crystals in

two dimensions, with a

in three dimensions. • • • • • (a) Space lattice O o (b) Basis, containing two

different ions O O O O O o* o* o* o* o* o o o o o o* o- o* o* o* o o o o o o" o* o* o"

o* o o o o o o o o o o (c) Crystal structure Fig. 1.1. The crystal structure (c) may be

considered ...

The

**discussion**of the symmetry of crystals in three dimensions can becomerather tedious, and instead we shall treat fairly completely the theory of crystals in

two dimensions, with a

**discussion**of only a few important examples of structuresin three dimensions. • • • • • (a) Space lattice O o (b) Basis, containing two

different ions O O O O O o* o* o* o* o* o o o o o o* o- o* o* o* o o o o o o" o* o* o"

o* o o o o o o o o o o (c) Crystal structure Fig. 1.1. The crystal structure (c) may be

considered ...

Page 79

Table 3.3 gives a comparison of the observed binding energies of a number of

ionic crystals with the calculated values of Slater obtained by using values of n

derived from compressibility data. The results of rather more refined calculations

by Mayer and collaborators are also given. For a

which the experimental values are obtained from thermochemical data, and the

use of the Born-Haber cycle in this connection, the reader is referred to the

review article ...

Table 3.3 gives a comparison of the observed binding energies of a number of

ionic crystals with the calculated values of Slater obtained by using values of n

derived from compressibility data. The results of rather more refined calculations

by Mayer and collaborators are also given. For a

**discussion**of the methods bywhich the experimental values are obtained from thermochemical data, and the

use of the Born-Haber cycle in this connection, the reader is referred to the

review article ...

Page 176

DEBYE RELAXATION TIME Debye12 has given an elegant

dielectric relaxation in polar liquids and in solutions of polar molecules in non-

polar solvents; his central result is that the orientational part of the polarizability

depends on frequency as (7.35) a = — 1 + low- where t is the relaxation time and

a0 is the static orientational polarizability. Debye has suggested further that in

liquids the relaxation time is related to the viscosity rj by the approximate relation

(7.36) t = 4rr ...

DEBYE RELAXATION TIME Debye12 has given an elegant

**discussion**ofdielectric relaxation in polar liquids and in solutions of polar molecules in non-

polar solvents; his central result is that the orientational part of the polarizability

depends on frequency as (7.35) a = — 1 + low- where t is the relaxation time and

a0 is the static orientational polarizability. Debye has suggested further that in

liquids the relaxation time is related to the viscosity rj by the approximate relation

(7.36) t = 4rr ...

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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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absorption acceptors alkali alloy approximately atoms axes axis barium titanate boundary Bragg Brillouin zone calculated chapter charge conduction band conduction electrons crystal structure cube cubic Curie point Debye density dielectric constant diffraction diffusion dipole direction discussion dislocation distribution domain effective mass elastic electric field energy equation equilibrium exciton experimental F centers factor Fermi ferroelectric ferromagnetic free electron frequency germanium given heat capacity hexagonal holes impurity interaction ionization ions lattice constant lattice point levels low temperatures magnetic field metals molecules motion nearest neighbor normal observed orbital p-n junction paramagnetic particles phonons Phys physics plane polarizability polarization positive potential Proc recombination region resonance result room temperature rotation semiconductor Shockley shown in Fig sodium chloride solid solution space group specimen spin superconducting surface susceptibility symmetry Table theory thermal tion transistor transition unit volume vacancies valence band values vector velocity wave functions wavelength x-ray zero