| 发明名称 | Piezoelectric ceramic, piezoelectric ceramic component, and piezoelectric device using such piezoelectric ceramic component | ||
| 摘要 | In a piezoelectric ceramic which has an alkali-containing niobate-based perovskite structure in which constituent elements are Li, Na, K, Nb, and O, a Li3NbO4 crystal phase is intentionally deposited on a piezoelectric ceramic having an alkali-containing niobate-based perovskite structure, whereby sintering becomes possible at about 1000° C. rather than at the normally required sintering temperature of 1050° C. or greater. | ||
| 申请公布号 | US9537082(B2) | 申请公布日期 | 2017.01.03 |
| 申请号 | US201113876453 | 申请日期 | 2011.12.13 |
| 申请人 | TAIYO YUDEN CO., LTD. | 发明人 | Hatano Keiichi;Shimizu Hiroyuki;Doshida Yutaka |
| 分类号 | H01L41/187;C04B35/00;C04B35/495;H03H9/02;H01H57/00;H01L41/43;H01L41/047 | 主分类号 | H01L41/187 |
| 代理机构 | Law Office of Katsuhiro Arai | 代理人 | Law Office of Katsuhiro Arai |
| 主权项 | 1. A piezoelectric ceramic having an alkali-containing niobate perovskite structure and Li, Na, K, Nb and O as constituent elements, and holding a crystal phase expressed by a composition formula Li3NbO4, wherein the piezoelectric ceramic shows peaks of Li3NbO4 crystal phase in an X-ray diffraction profile and is expressed by a composition formula {Lix[NayK1-y]1-x}aNbO3 (in the formula, 0<x≦0.20, 0≦y≦1, and 1.0≦a≦1.01) containing no Sb nor Ta. | ||
| 地址 | Tokyo JP | ||