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US 2007/0164630 A1Published application
High temperature piezoelectric material
AssigneeThe Penn State Research Foundation
InventorsShujun Zhang, Thomas Shrout
Life of this patent
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Abstract
Piezoelectric devices with excellent high temperature operation capabilities are described, including piezoelectric sensors and actuators that use a rare earth calcium oxyborate or langanite as the piezoelectric material.
Claims21
A piezoelectric device having a maximum operational temperature of at least 800° C., the piezoelectric device comprising a piezoelectric material, the piezoelectric material being a rare earth calcium oxyborate or langanite.
A piezoelectric device, comprising an (zyw)-θ cut single crystal of a rare earth calcium oxyborate,
- the (zyw)-θ cut single crystal having a cut angle θ between approximately 30° and approximately 60°.
Dependencies are inferred from the claim text.