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- 1. Crystal lattice [1] Tran Anh Tuan Materials Engineer MES Team
- 2. Lattice = array of points with identical surroundings 3D - lattice
- 3. Lattice = array of points with identical surroundings Unit cell
- 4. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ
- 5. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ simple cubic
- 6. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ body centered
- 7. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ face centered
- 8. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ tetragonal
- 9. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ bc tetragonal
- 10. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ orthorhombic
- 11. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ orthorhombic
- 12. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ orthorhombic
- 13. 7 crystal systems c a b Crystal system Cell vector Cell angles Cubic Tetragonal Orthorhombic Hexagonal Monoclinic Triclinic Rhombohedral a = b = c a = b ≠ c a ≠ b ≠ c a = b ≠ c a ≠ b ≠ c a ≠ b ≠ c a = b = c α = β = γ = 90 α = β = γ = 90 α = β = γ = 90 α = β = γ = 120 α = β = 90 ≠ γ α ≠ β ≠ γ ≠ 90 α = β = γ ≠ 90 α β γ orthorhombic
- 14. ..to be continued

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