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  Unit Cell

Unit Cell:

Unit cell is the smallest essential repeating portion of a crystal lattice from which the crystal is manufacture by repetition in 3-dimension.

Characteristic parameters of a unit cell:

1154_unit cell.jpg

Crystallographic axes: ox, oy, oz
Interfacial angles: α, β, γ
Primitives (i.e., Intercepts): a, b, c

Crystallography:

The study of internal structure of crystal is termed as Crystallography. In the year 1913-English physicists, Father and Son, William and Lawrence Bragg generated X-ray crystallography further by establishing laws which govern the orderly arrangement of atoms in crystal interference and diffraction patterns. They also explained the wave nature of X-rays. In the year 1915 William Bragg and Lawrence Bragg were awarded Nobel Prize for physics for X-ray analysis of crystal structure.

 

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