发明名称 |
PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD FOR PRODUCING SAME |
摘要 |
<p>A piezoelectric/electrostrictive porcelain composition contains at least Nb, Ta, and one or more kinds of alkali metal elements, and a ratio (molar ratio) of Nb, Ta, and the alkali metal element is represented by a non-stoichiometric composition ratio. The piezoelectric/electrostrictive porcelain composition is capable of obtaining a piezoelectric/electrostrictive device which is dense and which is superior in crystallinity and which exhibits superior piezoelectric/electrostrictive characteristics even in a case where the composition is fired on lower-temperature conditions as compared with a conventional technology.</p> |
申请公布号 |
EP1857425(B1) |
申请公布日期 |
2014.12.17 |
申请号 |
EP20060728704 |
申请日期 |
2006.03.07 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
KOIZUMI, TAKAAKI;YAMAGUCHI, HIROFUMI;TANAKA, RITSU |
分类号 |
H01L41/09;C04B35/495;H01L41/187;H01L41/43 |
主分类号 |
H01L41/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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