Piezoelectric crystal element on the basis of GAPO.sub.4

Details Piezoelectric crystal element on the basis of GAPO.sub.4 Piezoelectric crystal element on the basis of GAPO.sub.4

1989-11-17

1991-02-12

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

049926942

ABSTRACT:
In order to improve the temperature stability of piezoelectric and elastic properties of piezoelectric crystal elements based on GaPO.sub.4, preferably for resonator applications, and to facilitate alignment when the crystal elements are cut from the raw crystal bars, the proposal is put forward that the principal plane H of the crystal element be parallel to a cutting plane, which is generated by rotating a hexagonal prism face of a raw crystal bar, which lies parallel to the optical axis, around one of the two-fold crystallographic symmetry axes a.sub.1, a.sub.2 or a.sub.3 through an angle .theta. of -5.degree. to -22.degree..

REFERENCES:
patent: 3122662 (1964-02-01), Mason

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