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Specialty Compounds RTP Company

Aluminum Arsenide, AlAs
Categories: Ceramic; Phosphide/Pnictide; Other Engineering Material; Semiconductor

Key Words: Pnictide; Semiconductor; Aluminium Arsenide; Arsenic
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Physical PropertiesMetricEnglishComments
Density 3.81 g/cc0.138 lb/in³
a Lattice Constant 5.6622 Å5.6622 Å
Molecular Weight 101.903 g/mol101.903 g/mol
 
Mechanical PropertiesMetricEnglishComments
Knoop Microhardness 50005000N/mm²
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant 10.910.9
Band Gap 2.16 eV2.16 eV
Electron Mobility, cm²/V-s 12001200
Hole Mobility, cm²/V-s 420420
 
Thermal PropertiesMetricEnglishComments
CTE, linear 3.50 µm/m-°C
@Temperature 20.0 °C
1.94 µin/in-°F
@Temperature 68.0 °F
Thermal Conductivity 84.0 W/m-K583 BTU-in/hr-ft²-°F
Melting Point 1740 °C3160 °F
Heat of Formation 627 kJ/mol627 kJ/mol
Debye Temperature 144 °C291 °F
 
Descriptive Properties
CAS Number22831-42-1
ColorOrange
Crystal StructureCubicSphalerite Structure - Space Group F(-4)3m

References for this datasheet.

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