Piezoelectric element, multilayered piezoelectric element, liquid discharge apparatus, and ultrasonic motor
US9190602B2 · kind B2 · utility
5Cited by
3References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Dec 18, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric element according to the present invention includes a piece of piezoelectric material and a plurality of electrodes disposed on both surfaces of the piezoelectric material. The piezoelectric material is including a perovskite-type metal oxide represented by general formula (1) below as a main component, a portion or the entire of the piezoelectric material is held by the plurality of electrodes, and the piezoelectric material held by the electrodes has a first region having remanent polarization. General Formula (1) (Ba1-x-yCaxSny)α(Ti1-zZrz)O3 (where 0.020≦x≦0.200, 0.020≦y≦0.200, 0≦z≦0.050, and 0.986≦α≦1.100)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.