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Gallium Nitride - GaN

Classification: Nitride
Atomic numbers: 31 & 7
Atomic weight: 83.73
Melting point (C): 800 sub.
Boiling point (C):
Density (g/cm3):
Energy gap (eV): 3.5
Coefficient of linear thermal expansion (cm/cm): 300-900 K-perpendicular to c-axis: 5.59, to 700 K-parallel to c-axis: 3.17, 700-900 K-parallel to c-axis: 87.75
Atomic spacing (A): 3.18 or 5.185
Refractive index (n=):
Hardness (Mosh-scratch): 6-7
Crystal structure: Hexagonal-normal: (10T0) prism
Color (solid): Silver grey
Cleavage: Basal: (0001)