Invention Grant
- Patent Title: Piezoelectric material, piezoelectric element, and electronic apparatus
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Application No.: US14139297Application Date: 2013-12-23
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Publication No.: US09050799B2Publication Date: 2015-06-09
- Inventor: Takayuki Watanabe , Shunsuke Murakami , Tatsuo Furuta
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc. IP Division
- Priority: JP2012-287243 20121228
- Main IPC: H04N5/225
- IPC: H04N5/225 ; H04N9/04 ; H01L41/00 ; B41J2/045 ; B41J2/14 ; C04B35/468 ; H01L41/43 ; H01L41/09 ; H01L41/187 ; H02N2/10 ; H02N2/16 ; H01L41/047 ; C04B35/626

Abstract:
A piezoelectric material includes a metal oxide represented by general formula (1) below, a Mn content is 0.04 parts by weight or more and 0.36 parts by weight or less, a Li content α is 0.0013 parts by weight or more and 0.0280 parts by weight or less, a Bi content β is 0.042 parts by weight or more and 0.850 parts by weight or less, and the contents α and β satisfy 0.5≦(α·MB)/(β·ML)≦1 (Ba1-xCax)a(Ti1-y-zZrySnz) O3 (1) (where x, y, z, and a satisfy 0.09≦x≦0.30, 0.025≦y≦0.074, 0≦z≦0.02, and 0.986≦a≦1.02).A piezoelectric material according to an embodiment of the present invention contains no lead, has a low degree of temperature dependency of piezoelectric performance within operation temperature ranges of piezoelectric elements, and good piezoelectric properties.
Public/Granted literature
- US09144971B2 Piezoelectric material, piezoelectric element, and electronic apparatus Public/Granted day:2015-09-29
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