Invention Grant
- Patent Title: Piezoelectric material, piezoelectric element, and electronic apparatus
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Application No.: US14329573Application Date: 2014-07-11
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Publication No.: US09761788B2Publication Date: 2017-09-12
- Inventor: Shunsuke Murakami , Takanori Matsuda , Kanako Oshima , Jumpei Hayashi , Takayuki Watanabe , Hidenori Tanaka , Hiroshi Saito
- 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: JP2013-146307 20130712
- Main IPC: H01L41/187
- IPC: H01L41/187 ; C04B35/468 ; H01L41/18 ; H01L41/09 ; B06B1/06 ; B41J2/14 ; H01L41/047 ; H01L41/083 ; H02N2/10 ; H02N2/16

Abstract:
Provided is a lead-free piezoelectric material having satisfactory piezoelectric constant and mechanical quality factor in a device driving temperature range (−30° C. to 50° C.) The piezoelectric material includes a main component containing a perovskite-type metal oxide represented by Formula 1, a first auxiliary component composed of Mn, and a second auxiliary component composed of Bi or Bi and Li. The content of Mn is 0.040 parts by weight or more and 0.500 parts by weight or less based on 100 parts by weight of the metal oxide on a metal basis. The content of Bi is 0.042 parts by weight or more and 0.850 parts by weight or less and the content of Li is 0.028 parts by weight or less (including 0 parts by weight) based on 100 parts by weight of the metal oxide on a metal basis.(Ba1-xCax)a(Ti1-yZry)O3 . . . (1), wherein, 0.030≦x
Public/Granted literature
- US20150041701A1 PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS Public/Granted day:2015-02-12
Information query
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