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Determination of Crystal Structure, MUHAMAD NABIL BIN HASHIM (A19SC0491) -…
Determination of Crystal Structure
Introduction
To determine atomic structure
How ?
Diffraction Source
Secondary
Neutron
For high precision
To study magnetic Structure of Materials
electron
For study of material
Primary
X-ray
Bragg's Law
Explain diffracted rays
e.g.: Cubic Unit Cell
Check other system too !
Reciprocal Lattice
set of the wave vectors in reciprocal space
Check Primitive Lattice Vector
Primitive Unit Cell
Conventional Unit Cell
Ewald Construction
Brilouin zone
Choose point to observed
Check Ewald Construction for different techniques too !
Diffraction Tecniques
Laue
Transmission technique
Reflected Technique
Determining of Lattice Symmetry
Crystal Rotation
determine the shape and size of a unit cell
Powder
for phase identification of a crystalline material
Diffractometer
to obtain diffraction from single crystal
MUHAMAD NABIL BIN HASHIM (A19SC0491)
