Invention Grant
- Patent Title: Piezoelectric ceramic composition
- Patent Title (中): 压电陶瓷组合物
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Application No.: US12076693Application Date: 2008-03-21
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Publication No.: US07901590B2Publication Date: 2011-03-08
- Inventor: Takeo Tsukada , Masahito Furukawa
- Applicant: Takeo Tsukada , Masahito Furukawa
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agent Manabu Kanesaka
- Priority: JP2007-080238 20070326
- Main IPC: H01L41/187
- IPC: H01L41/187

Abstract:
A piezoelectric ceramic composition that acquires excellent piezoelectric properties even when it is fired at a low temperature is offered. The piezoelectric ceramic composition possesses a composition corresponding to a solid solution that contains a first compound having a rhombohedral crystal-based perovskite structure, a second compound having a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Fe or Mn as a second component element, and a hexavalent metallic element as a third component element. The hexavalent metallic element is at least one kind selected from W and Mo.
Public/Granted literature
- US20080237530A1 Piezoelectric ceramic composition Public/Granted day:2008-10-02
Information query
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