| 发明名称 |
PIEZOELECTRIC SINGLE CRYSTAL COMPOSITION, PIEZOELECTRIC VIBRATOR, AND SURFACE ACOUSTIC WAVE DEVICE |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piezoelectric vibrator and a surface acoustic wave device by using a piezoelectric single crystal having a large electromechanical coupling coefficient, a low acoustic velocity and a low SAW velocity. <P>SOLUTION: The piezoelectric single crystal composition expressed by chemical formula (Sr<SB>1-x</SB>Ba<SB>x</SB>)<SB>3</SB>TaGa<SB>3</SB>Si<SB>2</SB>O<SB>14</SB>(0<x≤0.7) and having a langasite structure is provided, which miniaturize a piezoelectric vibrator using volume acoustic waves such as a piezoelectric filter, a piezoelectric resonator and a piezoelectric gyro and a surface acoustic wave device such as a piezoelectric filter and a sensor. <P>COPYRIGHT: (C)2007,JPO&INPIT |
| 申请公布号 |
JP2006282433(A) |
申请公布日期 |
2006.10.19 |
| 申请号 |
JP20050102813 |
申请日期 |
2005.03.31 |
| 申请人 |
NEC TOKIN CORP |
发明人 |
SASAKI ATSUSHI;HAYASAKA JUNICHI;IKEDA YOSHIAKI;FUJIWARA CHIEKO |
| 分类号 |
C30B29/34;H01L41/09;H01L41/18;H01L41/22;H01L41/39;H01L41/41;H03H9/17;H03H9/25 |
主分类号 |
C30B29/34 |
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