| 发明名称 |
Relaxor ferroelectric compositions for field induced ultrasonic transducers |
| 摘要 |
A relaxor ferroelectric composition that has the components lead magnesium niobate, lead titanate, and lead magnesium tungstate. The components are preferably present in relative molar amounts of (1-x-y) lead magnesium niobate, (x) lead titanate, and (y) lead magnesium tungstate, where 0.11</=x</=0.13 and 0.01</=y</=0.03. Also disclosed is a tunable ultrasonic transducer made of a relaxor ferroelectric composition that has the components lead magnesium niobate, lead titanate, and lead magnesium tunstate. A method of making a relaxor ferroelectric material comprising the step of adding an effective amount of lead magnesium tungstate to a lead magnesium niobate-lead titanate composition is also disclosed.
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| 申请公布号 |
US5759432(A) |
申请公布日期 |
1998.06.02 |
| 申请号 |
US19960663729 |
申请日期 |
1996.06.14 |
| 申请人 |
PENN STATE RESEARCH FOUNDATION |
发明人 |
KUMAR, UMESH;HUEBNER, WAYNE;WANG, SEA FUE |
| 分类号 |
B06B1/06;C04B35/499;H01L41/187;(IPC1-7):C04B35/495;C04B35/472;H02K47/04 |
主分类号 |
B06B1/06 |
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