发明授权
- 专利标题: Piezoelectric material and piezoelectric element
- 专利标题(中): 压电材料和压电元件
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申请号: US961147申请日: 1997-10-30
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公开(公告)号: US5935485A公开(公告)日: 1999-08-10
- 发明人: Takao Tani , Hiroaki Makino , Nobuo Kamiya
- 申请人: Takao Tani , Hiroaki Makino , Nobuo Kamiya
- 申请人地址: JPX Aichi
- 专利权人: Kabushiki Kaisha Toyota Chuo Kenkyusho
- 当前专利权人: Kabushiki Kaisha Toyota Chuo Kenkyusho
- 当前专利权人地址: JPX Aichi
- 优先权: JPX8-290762 19961031; JPX9-030867 19970214; JPX9-078365 19970328; JPX9-106233 19970423
- 主分类号: H01L41/187
- IPC分类号: H01L41/187 ; H01L41/00
摘要:
A piezoelectric material includes a PZT ceramic, and a noble metal component. The noble metal component is added to the PZT ceramic in an amount of 0.35 parts by volume or more with respect to 100 parts by volume of the PZT ceramic, and is at least one element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt and Au, or is an alloy of silver (Ag) and the noble metal element. A piezoelectric element includes a pair of external electrodes, at least a pair of piezoelectric layers, and a conductive layer. The piezoelectric layers are formed of the PZT ceramic, and are disposed between the external electrodes. The conductive layer is formed of the noble metal component, and is insulated from the external electrodes. The piezoelectric layers and the conductive layer are formed lamellarly, and are laminated alternately in a direction connecting the external electrodes.
公开/授权文献
- US5378078A Manhole cover 公开/授权日:1995-01-03