Piezoelectric ceramic composition and piezoelectric ceramic device using the same
US6423244B1 · kind B1 · utility
1Cited by
2References
20Claims
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Key dates
| Filing date | Aug 16, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Sep 8, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/853
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A piezoelectric ceramic composition mainly contains a component of the formula SrBi2Nb2O9 and includes at least a trivalent metallic element other than Bi constituting the main component in a proportion of more than 0 mol and equal to or less than about 0.15 mol relative to 1 mol of Bi in the main component. This piezoelectric ceramic composition mainly containing SrBi2Nb2O9 is useful as a material for a piezoelectric ceramic device having an improved temperature-dependent factor of resonant frequency. Such a satisfactory piezoelectric ceramic device is also provided using this piezoelectric ceramic composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.