Please enable JavaScript.
Coggle requires JavaScript to display documents.
CRYSTAL STRUCTURE - Coggle Diagram
CRYSTAL STRUCTURE
Introduction
Lattice : Structure that is formed by a group of array points on which the basis is attached.
Basis: Atom or groups of atoms which build up the structural attracted to the lattices point.
Crystal : Substance formed by regular repetition in space of atom or groups of atoms.
Crystal structure = Lattice + Basis
Unit cell
Primitive
Single lattice point per cell
Smallest area in 2D or volume in 3D
Conventional
More then one lattice point per cell
Integral multiples of the area of primitive cell
Crystal classification
Bravais Lattice (BL)
All atoms are of the same kind
All lattice point are equivalent
2D
3D
Non-Bravais Lattice (non-BL)
Atom can be of different kind
Some lattice point are not equivalent
A combination of two or more BL
Symmetry operation
2-D, 3-D System
Basis lattice Vector
Shortest displacement vector. (Between 2 lattice point.)
