发明公开
EP2819195A3 Piezoelectric material, piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generator
审中-公开
压电材料，压电元件，液体喷射头，液体喷射装置，超声波传感器，压电马达和电流发生器
- 专利标题： Piezoelectric material, piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generator
- 专利标题（中）： 压电材料，压电元件，液体喷射头，液体喷射装置，超声波传感器，压电马达和电流发生器
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申请号： EP14161857.9申请日： 2014-03-26
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公开(公告)号： EP2819195A3公开(公告)日： 2015-08-26
- 发明人: Sumi, Koji , Kitada, Kazuya , Sakai, Tomohiro , Hamada, Yasuaki , Isshiki, Tetsuya , Kimura, Satoshi , Ito, Akio , Handa, Tsuneo
- 申请人： Seiko Epson Corporation
- 申请人地址： 4-1, Nishishinjuku 2-chome Shinjuku-ku Tokyo JP
- 专利权人： Seiko Epson Corporation
- 当前专利权人： Seiko Epson Corporation
- 当前专利权人地址： 4-1, Nishishinjuku 2-chome Shinjuku-ku Tokyo JP
- 代理机构： Miller Sturt Kenyon
- 优先权： JP2013137281 20130628; JP2014001902 20140108
- 主分类号： H01L41/187
- IPC分类号： H01L41/187 ; C04B35/475 ; C04B35/495 ; B41J2/14
摘要：
A piezoelectric material contains a first component that is a rhombohedral crystal that is configured to have a complex oxide with a perovskite structure and Curie temperature is set to be Tc1 and a second component that is a crystal other than a rhombohedral crystal that is configured to have a complex oxide with the perovskite structure and Curie temperature is set to be Tc2, in which the absolute value of the difference between Tc1 and Tc2 |Tc1-Tc2| is equal to or lower than 50°C, and a composition near an MPB line is provided in a phase diagram that employs a composition ratio of a first component to a second component for the horizontal axis and temperature for the vertical axis.
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