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http://dx.doi.org/10.4313/JKEM.2016.29.3.164

Dielectric Properties and Electrocaloric Effects of PLZT Ferroelectric Ceramics by Applying Electric Fields  

Kim, You-Seok (Department of Electrical Engineering, Semyung University)
Yoo, Ju-Hyun (Department of Electrical Engineering, Semyung University)
Jeong, Yeong-Ho (Department of Electrical Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.29, no.3, 2016 , pp. 164-167 More about this Journal
Abstract
In this study, in order to develop relaxor ferroelectric ceramics for refrigeration device application with large electrocaloric effect, PLZT(8/65/35) composition was fabricated using conventional solid-state method. The Curi temperature of this composition PLZT ceramics was $230^{\circ}C$, and the P-E hysteresis loops of the PLZT ceramics as a fuction of temperature became slim by degrees with higher temperatures. The maximum value of ${\Delta}T$ of $0.243^{\circ}C$ in ambient temperature of $215^{\circ}C$ with 30 kV/cm was appeared. It is considered that PLZT ceramics possess the possibility of refrigeration device application.
Keywords
Electrocaloric effect; Ferroelectric ceramics; PLZT; P-E hysteresis loops;
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Times Cited By KSCI : 1  (Citation Analysis)
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