Invention Grant
US09082976B2 Piezoelectric ceramics, manufacturing method for piezoelectric ceramics, piezoelectric element, liquid discharge head, liquid discharge apparatus, ultrasonic motor, optical apparatus, vibration generator, dust removing device, imaging apparatus, and electronic apparatus
有权
压电陶瓷,压电陶瓷的制造方法,压电元件,排液头,液体排出装置,超声波马达,光学装置,振动发生器,除尘装置,成像装置和电子装置
- Patent Title: Piezoelectric ceramics, manufacturing method for piezoelectric ceramics, piezoelectric element, liquid discharge head, liquid discharge apparatus, ultrasonic motor, optical apparatus, vibration generator, dust removing device, imaging apparatus, and electronic apparatus
- Patent Title (中): 压电陶瓷,压电陶瓷的制造方法,压电元件,排液头,液体排出装置,超声波马达,光学装置,振动发生器,除尘装置,成像装置和电子装置
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Application No.: US13599689Application Date: 2012-08-30
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Publication No.: US09082976B2Publication Date: 2015-07-14
- Inventor: Makoto Kubota , Takayuki Watanabe , Hisato Yabuta , Jumpei Hayashi , Nobuhiro Kumada , Satoshi Wada
- Applicant: Makoto Kubota , Takayuki Watanabe , Hisato Yabuta , Jumpei Hayashi , Nobuhiro Kumada , Satoshi Wada
- 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: JP2011-194101 20110906; JP2012-189004 20120829
- Main IPC: H01L41/18
- IPC: H01L41/18 ; H01L41/187 ; H01L41/00 ; C04B35/00 ; H02N2/00 ; C04B35/468 ; H01L41/43 ; H01L41/09 ; H02N2/10 ; H02N2/16 ; B41J2/14 ; C04B35/475 ; C04B35/626 ; C04B35/64 ; C01G23/00 ; C01G53/00

Abstract:
Provided is a piezoelectric ceramics that can achieve both high piezoelectric performance and a high Curie temperature. Also provided are a piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust removing device, which use the piezoelectric ceramics. The piezoelectric ceramics include a perovskite-type metal oxide expressed by a general formula (1): xBaTiO3-yBiFeO3-zBi(M0.5Ti0.5)O3, where M represents at least one type of element selected from the group consisting of Mg and Ni, x satisfies 0.40≦x≦0.80, y satisfies 0≦y≦0.30, z satisfies 0.05≦z≦0.60, and x+y+z=1 is satisfied, and are oriented in a (111) plane in a pseudocubic expression.
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