发明名称 |
Piezoelectric ceramic composition and piezoelectric element using the piezoelectric ceramic composition |
摘要 |
Provided is a piezoelectric ceramic composition containing a lead titanate which has excellent temperature stability of the resonance frequency, and is suitable for application in a filter, a vibrator or the like, and a piezoelectric element using the piezoelectric ceramic composition. A piezoelectric substrate comprising a ceramic material containing PbTiO3 is provided with vibrating electrodes on the front and rear surfaces. The ceramic material containing PbTiO3 contains not less than about 0.1% by weight or more than about 3.0% by weight of Mn based on MnCO3 as the subcomponent in the main component having a composition satisfying 0.02</=x</=0.16 and 0.15</=y</=0.50 of the general formula Pb1-1.5xNdx[(In+E,fra 1/2+EE Nb+E,fra 1/2+EE )yTi1-y]O3.
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申请公布号 |
US6117355(A) |
申请公布日期 |
2000.09.12 |
申请号 |
US19990320320 |
申请日期 |
1999.05.26 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
YOSHIZAWA, ISAMU;HORIKAWA, KATSUHIRO;HAYASHI, KOICHI;ANDO, AKIRA |
分类号 |
H01L41/09;C04B35/46;H01L41/113;H01L41/187;H03H9/17;(IPC1-7):C04B35/499;C04B35/472;H01L41/08 |
主分类号 |
H01L41/09 |
代理机构 |
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代理人 |
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地址 |
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