# Crystal Structure

##### Video Lessons & Revision Notes

Crystal Structure - Basic Concepts
1. Crystal Structure - Basic Concepts
In this 23 mins Video Lesson
Crystalline vs Amorphous, Space Lattice, Unit Cell, Basis/Motif, Crystallographic Axes, Primitives, Lattice Parameters, Primitive Vs Non-Primitve Unit Cell, and other topics.
Bravais Lattice
2. Bravais Lattice
In this 59 mins Video Lesson
Bravais Lattice - Basic Concepts, Cubic System, Tetragonal System, Orthogonal System, Monoclinic System, Triclinic System, Trigonal System, Hexagonal System, Calculation of Parameters for Simple Cubic Cell, Coordination Number, Atomic Packing Fraction, Calculation of Parameters for Body Centered Cubic, Calculation of Parameters for Face Centered Cubic, Numericals, and other topics.
Crystal Directions
3. Crystal Directions
In this 24 mins Video Lesson
Direction Indices in Lattice, Typical Examples on Direction Indices, Equivalent Directions in a Lattice, Equivalent Directions in Cubic Lattice, and other topics.
Crystal Planes
4. Crystal Planes
In this 55 mins Video Lesson
Miller Indices and Planes, Calculating Miller Indices, Steps for Drawing Planes using Miller Indices, Family of Planes, Interplanar Distance, Numericals, and other topics.
Atomic Packing
5. Atomic Packing
In this 29 mins Video Lesson
Basic Concepts, Hexagonal and Cubic Closed Packing, Analysis of Hexagonal Closed Packing, and other topics.
Important Crystal Structures
6. Important Crystal Structures
In this 32 mins Video Lesson
Diamond Crystal Structure, Critical Radius Ratio and Ligancy, NaCl Crystal Structure, Barium Titanate Crystal Structure, and other topics.

### Revision Notes

Crystallography: Space lattice, Unit Cell, Lattice parameters, Bravais lattices and Crystal systems, Cubic crystal system and lattices; Density & Packing Fraction; Miller indices of crystallographic planes and directions; interplanar distance; Diamond structure, NaCl structure, HCP structure, BaTiO3 structure; Ligancy and Critical radius ratio