1. Crystal Structure of Solids
Types of Solids
amorphous polycrystalline single crystal

2. Crystal Structure of Solids
Basic crystal structures
simple cubic body-centered face-centered

3. Crystal Structure of Solids
Miller Indices
Method
Formed by taking the reciprocal of the intercept in the respective dimension
Example 1
(1/3,1/2,1/1) or (236)

4. Crystal Structure of Solids
Miller Indices
Example 2

5. Crystal Structure of Solids
Surface Density of Atoms in a Plane
Method
Divide number of atoms (making sure to divide by total planes contributed to) by area of plane
Example
Density = 2/(a1a121/2)
Note: a1 is known as the lattice constant

6. Crystal Structure of Solids
Diamond Structure of Silicon
Tetrahedral structure