Piezoelectric material, piezoelectric element, multilayered piezoelectric element, manufacturing method for multilayered piezoelectric element, liquid discharge head, liquid discharge device, ultrasonic motor, optical device, vibration device, dust removing device, imaging device, and electronic device
US9768375B2 · kind B2 · utility
1Cited by
3References
27Claims
0Family size
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Key dates
| Filing date | Aug 16, 2013 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Oct 15, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/96
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a piezoelectric material that is free of lead and potassium, has satisfactory insulation property and piezoelectricity, and has a high Curie temperature. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1): General formula (1) (NaxM1-y)(Zrz(Nb1-wTaw)y(Ti1-vSnv)(1-y-z))O3 where M represents at least any one of Ba, Sr, and Ca, and relationships of 0.80≦x≦0.95, 0.85≦y≦0.95, 0<z≦0.03, 0≦v<0.2, 0≦w<0.2, and 0.05≦1−y−z≦0.15 are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.