Invention Grant
- Patent Title: Piezoelectric material, piezoelectric element, and electronic device
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Application No.: US14723963Application Date: 2015-05-28
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Publication No.: US09673379B2Publication Date: 2017-06-06
- Inventor: Shunsuke Murakami , Takayuki Watanabe , Takanori Matsuda , Kanako Oshima , Makoto Kubota
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A.Inc., IP Division
- Priority: JP2014-113124 20140530
- Main IPC: H01L41/187
- IPC: H01L41/187 ; G02B7/10 ; G02B27/00 ; B41J2/14 ; C04B35/468 ; B41J2/16 ; H01L41/43 ; C04B35/49 ; C04B35/626 ; C04B35/634 ; H01L41/047 ; H01L41/09 ; H02N2/10 ; H02N2/16

Abstract:
A piezoelectric material that does not contain lead and has excellent piezoelectric constant and mechanical quality factor in a device driving temperature range (−30° C. to 50° C.) is provided. A piezoelectric material includes a main component containing a perovskite metal oxide represented by following general formula (1), and a first auxiliary component containing Mn, wherein an amount of the contained Mn is 0.002 moles or more and 0.015 moles or less relative to 1 mole of the metal oxide. (Ba1-yBiy)a(Ti1-x-zZrxFez)O3 (1) (where 0.010≦x≦0.060, 0.001≦y≦0.015, 0.001≦z≦0.015, 0.950≦y/z≦1.050, and 0.986≦a≦1.020).
Public/Granted literature
- US20150349239A1 PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC DEVICE Public/Granted day:2015-12-03
Information query
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