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 of [Bi0.5(Na0.84K0.16)0.5]TiO3 Lead-free Ceramics

[Bi0.5(Na0.84K0.16)0.5]TiO3 무연 세라믹스의 전기열량 효과

  • Han, Jong-Dae (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)
  • Received : 2015.01.30
  • Accepted : 2015.03.24
  • Published : 2015.04.01
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Abstract

In this work, in order to develop the ceramics with an excellent electrocaloric effect, $[Bi_{0.5}(Na_{0.84}K_{0.16})_{0.5}]TiO_3$ ceramics were fabricated by conventional solid state reaction method. The ceramics was observed as rhombohedral phase by X-ray diffraction patterns. To investigate the electrocaloric effect of the ceramics, P-E hysteresis loops were measured at various temperature. The temperature change ${\Delta}T$ of these ceramics was calculated using the Maxwell's relations. The maximum value of temperature change ${\Delta}T$ was obtained as 0.3 $1^{\circ}C$ at $165^{\circ}C$ under applied electric fields 45 kV/cm.

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References

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