eFunda: Properties of Piezo Material Gallium Arsenide
engineering fundamentals Piezo Data: GaAs
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Gallium Arsenide
Crystal symmetry class Cubic 43m
Density 5307 kg/m3
Constitutive data is presented in the Strain-Charge format.
Compliance
12.64 -4.23 -4.23 0 0 0
-4.23 12.64 -4.23 0 0 0
-4.23 -4.23 12.64 0 0 0
0 0 0 18.6 0 0
0 0 0 0 18.6 0
0 0 0 0 0 18.6
*10-12 
Piezoelectric Coupling
0 0 0 2.6 0 0
0 0 0 0 2.6 0
0 0 0 0 0 2.6
*10-12 
Relative Permittivity
12.5 0 0
0 12.5 0
0 0 12.5
,  8.854 *10-12 
For a description of the ordering convention used to layout the constitutive matrices, see Subscript Ordering.
Glossary
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