发明申请
- 专利标题: Piezoelectric/electrostrictive body, piezoelectric/electrostrictive laminate, and piezoelectric/electrostrictive actuator
- 专利标题(中): 压电/电致伸缩体,压电/电致伸缩层压板和压电/电致伸缩致动器
-
申请号: US11305660申请日: 2005-12-16
-
公开(公告)号: US20060138899A1公开(公告)日: 2006-06-29
- 发明人: Tsutomu Nanataki , Mutsumi Kitagawa , Toshikatsu Kashiwaya
- 申请人: Tsutomu Nanataki , Mutsumi Kitagawa , Toshikatsu Kashiwaya
- 申请人地址: JP Nagoya-City
- 专利权人: NGK Insulators, Ltd.
- 当前专利权人: NGK Insulators, Ltd.
- 当前专利权人地址: JP Nagoya-City
- 优先权: JP2004-374499 20041224
- 主分类号: H01L41/18
- IPC分类号: H01L41/18
摘要:
There is disclosed a piezoelectric/electrostrictive body which has superior piezoelectric/electrostrictive properties and which exhibits a sufficient durability even in a case where a flexural displacement is repeated a large number of times. A piezoelectric/electrostrictive body is constituted of a large number of crystal grains having the piezoelectric/electrostrictive properties in the form of a film or a layer having one or more layers. A number ratio of crystal grains whose grain diameters W in a width direction are longer than grain diameters T in a thickness direction is 70% or more of a large number of crystal grains observed in an arbitrary section in the thickness direction.
公开/授权文献
信息查询
IPC分类: