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http://dx.doi.org/10.4313/JKEM.2002.15.10.858

Aging of Length-Extensional Vibration Modes in PZT Ceramics  

이개명 (제주대학교 전기공학과)
김병효 (제주대학교 전기공학과)
황충구 (제주대학교 전기공학과)
강찬호 (제주대학교 전기공학과)
현덕수 (한국전력공사 인천지사)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.15, no.10, 2002 , pp. 858-864 More about this Journal
Abstract
Aging stabilities of the operating frequency of piezoelectric devices such as filter, oscillator and discriminator are very important. In this study it was studied aging stabilities of the length-extensional vibration mode of Pb(Zr$\^$y/O$_3$+ x[wt%]Cr$_2$Co$_3$ ceramics. PZT ceramics in morphotropic phase boundary have higher aging rates of k$\_$31/ and resonance frequency than those in tetragonal phase or rhombohedral phase. Thermal aging moves the composition with maximum aging rate to Zr-rich side in Cr$_2$O$_3$ not added PZT system. In the PZT system, aging rates of k$\_$31/ and resonance frequency for first 30 days are bigger than those for the following 90 days. Thermal aging decrease those for first 30 days. Aging rate of resonance frequency of the ceramics with x=0.1, y=0.53 and x=0.3, y=0.53 increased by thermal aging.
Keywords
Aging characteristics; Piezoelectric ceramics; Resonance frequency, Length-extensional vibration; Oscillator;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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