Piezoelectric element, ink jet head, angular velocity sensor, and ink jet recording apparatus
US7312558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Apr 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8554
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a piezoelectric element, a cubic or tetragonal orientation control layer (15) is provided on a first electrode layer (14), and formed on the orientation control layer (15) is a piezoelectric layer (16) having a rhombohedral or tetragonal crystalline structure and made of lead zirconate titanate to which a Pb-containing complex perovskite compound expressed by the chemical formula Pb(AaBb)O3 has been added in an amount that is from 1 mol % to 50 mol %. The piezoelectric layer (16) is formed so that the crystal grains thereof become columnar grains which extend in the thickness direction of the piezoelectric layer (16) and in which the ratio of the average cross-sectional diameter to the length is from 1/50 to 1/14.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.