PLZT(8/65/35) 세라믹스의 소결온도에 따른 유전 및 전기열량 특성 = Dielectric and Electrocaloric Characteristics of PLZT(8/65/35) Ceramics as a Function of Sintering Temperature

다국어 초록 (Multilingual Abstract)

In this study, in order to develop relaxor ferroelectric ceramics for refrigeration device application with large electrocaloric effect and low sintering temperature, PLZT(8/65/35) ceramics was fabricated using conventional solid-state method with the variation of sintering temperature ($1,050^{\circ}C$, $1,100^{\circ}C$, $1,200^{\circ}C$). The XRD pattern of all specimens indicated general perovskite structure with secondary phase. From the results of temperature dependence of dielectric constant, the $T_C$ (ferroelectric-paraelectric phase transition temperature) was shifted toward high temperature with increasing sintering temperature. When the specimen was sintered at $1,100^{\circ}C$, the optimal value of ${\Delta}T{\sim}0.349^{\circ}C$ in ambient temperature of $215^{\circ}C$ was appeared. It is considered that PLZT(8/65/35) ceramics possess the possibility of refrigeration device application.

참고문헌 (Reference)

1 J. Wang, 550 : 561-563, 2013

2 X. C. Zheng, 28 : 20-26, 2012

3 M. Ožbolt, 40 : 174-188, 2014

4 D. Q. Xiao, 57 : 182-185, 1998

5 A. S. Mischenko, 311 : 1270-1271, 2006

6 Y. Bai, 110 : 094103-, 2011

7 M. Valant, 57 : 980-1009, 2012

8 류주현, "저온소결 8/65/35 PLZT 세라믹의 전기열량 효과" 한국전기전자재료학회 28 (28): 615-619, 2015