Chapter3 - Chapter 3 Crystal Structures Introduction...

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• 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 •A n i s o t r o p y • X-Ray Diffraction Chapter 3 Crystal Structures
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Lattice points Unit cell Square Rectangular Hexagonal a = b , φ = 90° a b , φ = 90° a = b , φ = 120° Bravais Lattice and Unit Cells
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Basis- Single character Basis- Double character Basis- Two characters with different orientations Lattice + Basis = Crystal structure Bravais Lattice and Unit Cells
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a = b = c, α = β = γ = 90° a = b c, α = β = γ = 90° a b c, α = β = γ = 90° a = b c, α = β = 90°, γ = 120° Cubic Tetragonal Orthorhombic Rhombohedral a b c, α = γ = 90° ≠ β a = b = c, α = β = γ ≠ 90° a b c, α ≠ β ≠ γ ≠ 90° Monoclinic Triclinic Hexagonal Bravais Lattice and Unit Cells
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This note was uploaded on 02/03/2011 for the course MSE 2001 taught by Professor Tannebaum during the Spring '08 term at Georgia Tech.

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Chapter3 - Chapter 3 Crystal Structures Introduction...

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