Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Electrocaloric Effect and Hystersis Properties of Pb-free Ferroelectric (Ba0.85Ca0.15)(Ti0.92Zr0.08)O3 Ceramics

무연 강유전 (Ba0.85Ca0.15)(Ti0.92Zr0.08)O3 세라믹스의 전기열량 효과 및 강유전 이력 특성

  • 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) ;
  • Lee, Jie-Young (School of Computer Science, Semyung University)
  • Received : 2013.10.02
  • Accepted : 2013.10.24
  • Published : 2013.11.01
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Abstract

In this study, electrocaloric effects of Pb-free $(Ba_{0.85}Ca_{0.15})(Ti_{0.92}Zr_{0.08})O_3$ ferroelectric ceramics were investigated and discussed using the characteristics of P-E hysteresis loops at wide temperature range from room temperature to $140^{\circ}C$. The remnant polarization $P_r$ and coercive field $E_c$ were decreased with increasing temperature. The temperature change ${\Delta}T$ by the electrcaloric effect was calculated by Maxwell's relations, and reached the maximum of ~0.15 at $120^{\circ}C$ under applied electric field of 30 kV/cm.

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References

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