发明申请
- 专利标题： PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ELEMENT
- 专利标题（中）： 压电陶瓷组合物和压电元件
-
申请号： US13263374申请日： 2010-05-21
-
公开(公告)号： US20120019108A1公开(公告)日： 2012-01-26
- 发明人: Daisuke Tanaka , Masahito Furukawa , Takeo Tsukada
- 申请人： Daisuke Tanaka , Masahito Furukawa , Takeo Tsukada
- 申请人地址： JP TOKYO
- 专利权人： TDK CORPORATION
- 当前专利权人： TDK CORPORATION
- 当前专利权人地址： JP TOKYO
- 优先权： JP2009-124252 20090522
- 国际申请： PCT/JP2010/058652 WO 20100521
- 主分类号： H01L41/187
- IPC分类号： H01L41/187 ; H01L41/083 ; C04B35/106
摘要：
A piezoelectric ceramic composition including a perovskite-type oxide, wherein the perovskite-type oxide has Na, K, Li, Ba and Sr at the A site and Nb, Ta and Zr at the B site, and has a crystal phase transition in a temperature range of −50 to 150° C., the crystal phase transition being accompanied by an endotherm of no greater than 4 J/g, as well as a piezoelectric element 20 provided with a piezoelectric ceramic 1 that contains the piezoelectric ceramic composition.
公开/授权文献
信息查询
IPC分类:
