Laminated piezoelectric element and production method of the same
US7564176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jul 18, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/79
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A laminated piezoelectric element capable of being sintered at low temperatures and high in piezoelectric properties is provided. The laminated piezoelectric element comprises a plurality of piezoelectric layers each comprising a composite oxide as a main constituent thereof and a plurality of internal electrode layers formed between the piezoelectric layers and containing Ag, wherein the piezoelectric layers are each comprised of a sintered body comprising the composite oxide, as a main constituent thereof, represented by (Pba-bMb) [(Zn1/3Nb2/3)xTiyZrz]O3 with the proviso that 0.96≦a≦1.03, 0≦b≦0.1, 0.05≦x≦0.15, 0.25≦y≦0.5, 0.35≦z≦0.6, x+y+z=1, and M represents at least one selected from Sr, Ca and Ba, and Ag in a content of 1.0% by weight or less (not inclusive of 0) in terms of Ag2O in relation to the main constituent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.