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Aluminium arsenide

Identifiers
CAS Number	22831-42-1
3D model (JSmol)	Interactive image
ChemSpider	81112
ECHA InfoCard	100.041.126
PubChem CID	89859
CompTox Dashboard (EPA)	DTXSID9066831
InChI InChI=1S/Al.AsKey: MDPILPRLPQYEEN-UHFFFAOYSA-N InChI=1/Al.As/rAlAs/c1-2Key: MDPILPRLPQYEEN-LYSWLDLJAW
SMILES #
Properties
Chemical formula	AlAs
Molar mass	101.9031 g/mol
Appearance	orange crystals
Density	3.72 g/cm
Melting point	1740 °C (2013 K)
Band gap	2.12 eV (indirect)
Electron mobility	200 cm/(V·s) (300 K)
Thermal conductivity	0.9 W/(cm·K) (300 K)
Refractive index (nD)	3 (infrared)
Structure
Crystal structure	Zinc Blende
Space group	Td-F-43m
Coordination geometry	Tetrahedral
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Y verify (what is  ?) Infobox references

Aluminium arsenide or aluminum arsenide (Template:AluminiumTemplate:Arsenic) is a semiconductor material with almost the same lattice constant as gallium arsenide and aluminium gallium arsenide and wider band gap than gallium arsenide.

Properties

• Thermal expansion coefficient 5 µm/(°C*m)
• Debye temperature 417 K
• Microhardness 5.0 GPa (50 g load)

References

1. Ioffe database
2. L. I. Berger "Semiconductor materials" CRC Press, 1996 ISBN 0-8493-8912-7, 9780849389122 (available on google books), p. 126

External links

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