Method and device for reducing the water content in piezoelectri

Details Method and device for reducing the water content in piezoelectri Method and device for reducing the water content in piezoelectri

1988-11-10

1989-11-14

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

048810037

ABSTRACT:
In order to reduce the water content in piezoelectric GaPO.sub.4 crystal elements the proposal is put forward that each GaPO.sub.4 crystal element should be cut in its entirety from one uniform growth zone of a GaPO.sub.4 raw crystal bar and should not contain any zone boundaries, and that the piezoelectric GaPO.sub.4 crystal elements should be treated with a dehydrating solution, until an infrared coefficient of .alpha.<1.5 cm.sup.-1 is obtained at a wavelength in the vicinity of 2.0 .mu.m.

REFERENCES:
patent: 3717562 (1973-02-01), Schinke et al.
patent: 3755671 (1973-08-01), Lockwood

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