High strain actuator using ferroelectric single crystal

Details High strain actuator using ferroelectric single crystal High strain actuator using ferroelectric single crystal

1997-01-28

1998-09-08

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310360, 310357, H01L 4104

Patent

active

058049070

ABSTRACT:
An actuator incorporating the invention includes a body of a ferroelectric material. The material is single crystalline and incorporates solid solutions of lead zinc niobate-lead titanate or lead magnesium niobate-lead titanate, described by the formulae: Pb(Zn.sub.1/3 Nb.sub.2/3).sub.1-x Ti.sub.x O.sub.3 and Pb(Mg.sub.1/3 Nb.sub.2/3).sub.l-y Ti.sub.y O.sub.3 l where x and y are defined as 0.ltoreq.x<0.10, and 0.ltoreq.y<0.40. Electrodes enable application of an electric field across the body in a direction that is generally aligned with a <001> crystallographic axis of the ferroelectric material.

REFERENCES:
patent: 4109359 (1978-08-01), Cross et al.
patent: 5295487 (1994-03-01), Saitoh et al.
patent: 5402791 (1995-04-01), Saitoh et al.

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