Invention Grant
- Patent Title: Piezoelectric composition and piezoelectric element
- Patent Title (中): 压电元件和压电元件
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Application No.: US13755354Application Date: 2013-01-31
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Publication No.: US08956547B2Publication Date: 2015-02-17
- Inventor: Taku Masai , Masahito Furukawa
- Applicant: TDK Corporation
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2012-018572 20120131; JP2012-255162 20121121
- Main IPC: C04B35/00
- IPC: C04B35/00 ; H01L41/00 ; H01L41/187 ; C04B35/475 ; C04B35/626 ; H01L41/316

Abstract:
A piezoelectric compound having no occurrence of segregation or uneven structures as well as a piezoelectric element having excellent piezoelectric properties. The piezoelectric composition includes a main component that is a perovskite-typed oxide represented by formula of ABO3, wherein, one site includes Bi, Na, and another site includes Ti, and part of the Ti is substituted by transition metal element Me (Me is at least one element selected from the group consisting of Mn, Cr, Fe and Co), according to the conversion of BiMeO3, the content ratio of Bi and the transition metal element Me accounts for 6˜43 mol % relative to the whole perovskite-typed oxides as the main component.
Public/Granted literature
- US20130193367A1 PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT Public/Granted day:2013-08-01
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