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

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Page 3

TWO-DIMENSIONAL CRYSTALS The general two-dimensional

Fig. 1.2 is an infinite array of

every

TWO-DIMENSIONAL CRYSTALS The general two-dimensional

**lattice**shown inFig. 1.2 is an infinite array of

**points**. The**points**obey the**lattice**condition thatevery

**point**should have the same environment in the same orientation.Page 6

The first position refers to the rotation about the point: thus the point group 4

contains 4-fold rotations. The second ... It is easily seen that this is invariant under

a rotation 2ir/6 about an axis through a

The first position refers to the rotation about the point: thus the point group 4

contains 4-fold rotations. The second ... It is easily seen that this is invariant under

a rotation 2ir/6 about an axis through a

**lattice point**and normal to the plane.Page 9

The Five Two-dimensional Bravais

Corresponding about Lattice Lattice Oblique Primitive rectangular Centered

rectangular Square Hexagonal Conventional Corresponding Unit Cell Axes

System Points ...

The Five Two-dimensional Bravais

**Lattices Point**-Group SymmetryCorresponding about Lattice Lattice Oblique Primitive rectangular Centered

rectangular Square Hexagonal Conventional Corresponding Unit Cell Axes

System Points ...

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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