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

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Page 10

The pattern of symmetry elements is known as a

unit of the complete

The pattern of symmetry elements is known as a

**space group**, and a plan of aunit of the complete

**space group**p'2 (short symbol) is shown in Fig. 1.6b. A**space****group**is a repetitive pattern of symmetry elements. It is not a crystal structure.Page 11

Two-dimensional Lattices, Point Groups, and

distinct

point group relative to the lattice. This possibility does not lead to distinct groups

in any ...

Two-dimensional Lattices, Point Groups, and

**Space Groups**Note. The twodistinct

**space groups**p3ml and p31m correspond to different orientations of thepoint group relative to the lattice. This possibility does not lead to distinct groups

in any ...

Page 32

Structure of a crystal based on

represented by the scalene triangle, which is repeated throughout the structure.

The unit is at some height, as indicated by + , above the base of the cell. (After

Phillips.) Fig ...

Structure of a crystal based on

**space group**PI. A unit of the structure isrepresented by the scalene triangle, which is repeated throughout the structure.

The unit is at some height, as indicated by + , above the base of the cell. (After

Phillips.) Fig ...

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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