发明申请
- 专利标题： PIEZOELECTRIC/ELECTROSTRICTIVE PORCELAIN COMPOSITION AND PIEZOELECTRIC/ELECTROSTRICTIVE ELEMENT
- 专利标题（中）： 压电/电致密孔组合物和压电/电绝缘元件
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申请号： US12036373申请日： 2008-02-25
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公开(公告)号： US20080302996A1公开(公告)日： 2008-12-11
- 发明人: Yukinobu Yura , Hirofumi Yamaguchi , Ritsu Tanaka
- 申请人： Yukinobu Yura , Hirofumi Yamaguchi , Ritsu Tanaka
- 申请人地址： JP Nagoya-City
- 专利权人： NGK Insulators, Ltd.
- 当前专利权人： NGK Insulators, Ltd.
- 当前专利权人地址： JP Nagoya-City
- 优先权： JP2007-046658 20070227; JP2007-338923 20071228
- 主分类号： C04B35/495
- IPC分类号： C04B35/495 ; H01L41/187
摘要：
A (Li, Na, K)(Nb, Ta)O3 based piezoelectric/electrostrictive porcelain composition obtained by adding a slight amount of a Mn compound to a perovskite type oxide containing Li, Na and K as A-site elements and contains at least Nb out of Nb and Ta as B-site elements, where a ratio of a total number of atoms of the A-site elements to a total number of atoms of the B-site elements is not smaller than 1. A composition of the perovskite type oxide as a principal component is represented by a general formula: {Liy(Na1-xKx)1-y}a(Nb1-zTaz)O3. The A/B ratio “a” preferably satisfies 1
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