Invention Grant
- Patent Title: Piezoelectric material and piezoelectric element using the same, and electronic apparatus using the piezoelectronic element
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Application No.: US14420135Application Date: 2013-08-21
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Publication No.: US09660174B2Publication Date: 2017-05-23
- Inventor: Shunsuke Murakami , Takayuki Watanabe , Miki Ueda , Nobuhiro Kumada
- Applicant: CANON KABUSHIKI KAISHA , UNIVERSITY OF YAMANASHI
- Applicant Address: JP Tokyo JP Kofu-Shi
- Assignee: CANON KABUSHIKI KAISHA,UNIVERSITY OF YAMANASHI
- Current Assignee: CANON KABUSHIKI KAISHA,UNIVERSITY OF YAMANASHI
- Current Assignee Address: JP Tokyo JP Kofu-Shi
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2012-186643 20120827
- International Application: PCT/JP2013/072927 WO 20130821
- International Announcement: WO2014/034692 WO 20140306
- Main IPC: H01L41/187
- IPC: H01L41/187 ; H01L41/18 ; C04B35/495 ; H01L41/43 ; H01L41/083 ; H01L41/273 ; B41J2/14 ; C04B35/626 ; B06B1/06 ; G02B27/00 ; H02N2/00 ; H01L41/047

Abstract:
Provided is a lead-free piezoelectric material having a high Curie temperature, a satisfactory mechanical quality factor, and a satisfactory Young's modulus, and a piezoelectric element and a multilayered piezoelectric element each using the piezoelectric material. The piezoelectric material contains 0.04 mol % or more to 2.00 mol % or less of Cu with respect to 1 mol of a perovskite-type metal oxide represented by the following general formula: (KvBiwBa1-v-w)1-yNax(NbyTi1-y)O3 where relationships of 0
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