- 专利标题: Piezoelectric composition and piezoelectric device
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申请号: US15914203申请日: 2018-03-07
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公开(公告)号: US10964878B2公开(公告)日: 2021-03-30
- 发明人: Masashi Kitazaki , Keisuke Teranishi , Makoto Ishizaki
- 申请人: TDK CORPORATION
- 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
- 代理机构: Oliff PLC
- 优先权: JPJP2017-045304 20170309
- 主分类号: H01L41/08
- IPC分类号: H01L41/08 ; H01L41/43 ; H01L41/047 ; H01L41/187 ; H01L41/37 ; C04B35/628 ; C04B35/26 ; C04B35/468 ; C01G49/00 ; C01G23/00
摘要:
A piezoelectric composition comprises a plurality of crystal particles, wherein the piezoelectric composition includes bismuth, iron, barium, titanium, and oxygen; the crystal particle include a core and a shell having a contents of bismuth higher than that in the core and covering the core; and the total area of the cross sections of the cores exposed to the cross section of the piezoelectric composition is expressed as SCORE, the total area of the cross sections of the shells exposed to the cross section of the piezoelectric composition is expressed as SSHELL, and 100·SCORE/(SCORE+SSHELL) is 50 to 90.
公开/授权文献
- US20180261755A1 PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC DEVICE 公开/授权日:2018-09-13
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