Mechanical quality factor of multilayer piezoelectric ceramic transducers

被引：8
|
作者：
Sasaki, Y [1 ]
Takahashi, S [1 ]
Yamamoto, M [1 ]
机构：
[1] NEC Corp Ltd, Funct Devices & Mat Labs, Kawasaki, Kanagawa 2168555, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2001年 / 40卷 / 5B期
关键词：
multilayer; piezoelectric transducer; mechanical quality factor; energy loss; electrode; resistance;
D O I：
10.1143/JJAP.40.3549
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It has long been known that the mechanical quality factor at resonance for multilayer piezoelectric transducers decreases as the number of ceramic layers is increased. We investigated this phenomenon using multilayer transducers, which are driven in a longitudinal mode of the piezoelectric transverse-effect. In this report, we express equivalent circuits for the transducers with resistance for electrode layers, We concluded that the mechanical quality factor at resonance for the transducers decreases because the ratio of resistance for electrode layers to the total equivalent resistance increases with the number of ceramic layers.
引用
收藏
页码：3549 / 3551
页数：3
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