Invention Grant
- Patent Title: Piezoelectric composition and piezoelectric element
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Application No.: US16497052Application Date: 2018-03-20
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Publication No.: US11659769B2Publication Date: 2023-05-23
- Inventor: Masakazu Hirose , Yuiko Hirose , Hiroki Katoh
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP 2017062381 2017.03.28
- International Application: PCT/JP2018/011037 2018.03.20
- International Announcement: WO2018/180770A 2018.10.04
- Date entered country: 2019-09-24
- Main IPC: H01L41/187
- IPC: H01L41/187
Abstract:
A piezoelectric composition including manganese and a complex oxide having a perovskite structure represented by a general formula ABO3, wherein an A site element in the ABO3 is potassium or potassium and sodium, a B site element in the ABO3 is niobium, a concentration distribution of the manganese has a variation, and the variation shows a CV value of 35% or more and 440% or less.
Public/Granted literature
- US20200243748A1 PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT Public/Granted day:2020-07-30
Information query
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