Piezoelectric material and piezoelectric element using the same, and electronic apparatus using the piezoelectronic element
US9660174B2 · kind B2 · utility
4Cited by
2References
23Claims
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Key dates
| Filing date | Aug 21, 2013 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Feb 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/877
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a lead-free piezoelectric material having a high Curie temperature, a satisfactory mechanical quality factor, and a satisfactory Young's modulus, and a piezoelectric element and a multilayered piezoelectric element each using the piezoelectric material. The piezoelectric material contains 0.04 mol % or more to 2.00 mol % or less of Cu with respect to 1 mol of a perovskite-type metal oxide represented by the following general formula: (KvBiwBa1-v-w)1-yNax(NbyTi1-y)O3 where relationships of 0<v≦0.39, 0<w≦0.39, 0.9≦w/v≦1.1, 0.80≦x≦0.95, and 0.85≦y≦0.95 are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.