Piezoelectric/electrostrictive body, and piezoelectric/electrostrictive element
US7911117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2008 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Aug 29, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The piezoelectric/electrostrictive body is represented by a composition formula ABO3 (A includes at least one element selected from the group consisting of Li, Na and K, and B includes at least one element selected from the group consisting of Nb, Ta, Sb and Mn), and the body is formed so that a main phase is a tetragonal system, and the orientation degree of a (001) face after a polarization treatment is smaller than that of a (100) face, in a plane vertical to the applying direction of an electric field applied so as to perform the polarization treatment. The present inventive piezoelectric/electrostrictive body has a ratio between a diffraction peak intensity I001 of the (001) face and a diffraction peak intensity I100 of the (100) face of I001/I100≦1, in an X-ray diffraction pattern in the same plane after the polarization treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.