Gallium Arsenide (GaAs)

Crystallographic

Syngony	Cubic
Symmetry Class	43m F43m
Lattice Constants	a = 5.653 Å

 

Optical

Refractive Index at n8.0	3.34
Transmission Range, microns	1 - 15
Absorbance m (l), cm -1
at 8.0 microns	0.26

 

Thermal

Thermal Linear Expansion, °C-1 for 0-30 °C	5.39 x 10-6
Thermal Conductivity, W/(m * °C) at 25 °C	46.05
Specific Heat Capacity, J/(kg * °C)	350
Melting Point, °C	1238

 

Mechanical

Density, g/cm3 at 20 °C	5.316
Mohs Hardness	4.5
Vickers Microhardness, Pa	6.9 x 109
Young Modulus (E), Pa	85 x 109
Poisson Ratio	0.31

 

Chemical

Molecular Weight	144.64
Solubility
in water, gram/100 cm3	insoluble

 

Ref. Index vs. Wavelength l

Wavelength, Microns	Refractive Index
8.0	3.34
10.0	3.035
14.5	2.82
17.0	2.59
19.0	2.41

Custom sizes and specifications are available on request.