Table 1 Elastic and piezoelectric properties of common piezoelectric materials

From: Merging mechanical bound states in the continuum in high-aspect-ratio phononic crystal gratings

Material

GaAs

AlN/GaN

LiNbO3

Crystal symmetry

Cubic

Hexagonal

Trigonal

Mirror symmetry with respect to xz- and yz-planes

Yes

Yes

No

Shear piezoelectric component

e14 = −0.16 C/m244

None

e16 = −2.53 C/m245

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