High strain actuator using ferroelectric single crystal
US5804907A · kind A · utility
105Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Jan 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8548
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.