1•Introduction•Bravais Lattice•Crystals with One Atom per Lattice Point•Miller Indices•Densities and Packing Factors of Crystalline Structures•Interstitial Positions and Sizes•Crystals with Multiple Atoms per Lattice Site•Liquid Crystals•Single Crystals and Polycrystalline Materials•Polymorphism•X-Ray DiffractionChapter 3Crystal Structures
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2•A crystalis a solid(or liquid)in which the constituent atoms, molecules, or ions are packed to have a long range orderas well as a short range order.•In crystal, its unit structure is repeated in all three (or two)spatial dimensions. •Many materials (metals, ceramics, and polymers) crystallize in a regular array with basic building blocks being at repeated regular intervals.•The structure is determined by the bond character and energy minimization.•Properties are dependent upon the type of bond and the structure.Chapter 3Crystal Structures