What is a Unit Cell?
Crystal structures are made up of repeating units of atoms in well defined locations in a lattice. In order to describe these structures, it is useful to define the smallest unit of this structure. This is called the unit cell. The unit cell is the smallest unit of a crystal structure that can be used to tile space and make the larger macroscopic structure.
Types of Unit Cell
There are basically three types of unit cells
- Primitive Cubic Unit Cell
- Body-centered Cubic Unit Cell
- Face centered cubic unit cell