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저온소결 (Pb0.88La0.08)(Zr0.65Ti0.35)O3 세라믹스의 전기열량 효과

라철민, 류주현, 최승훈, 김용운

Electrocaloric Effect of Low Temperature Sintering (Pb0.88La0.08)(Zr0.65Ti0.35)O3 Ceramics

Cheol Min Ra, Ju Hyun Yoo, Seung Hun Choi, Yong Woon Kim
J Electr Electron Mater 2015;28(6):375-378.
Published online: June 1, 2015
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본 연구에서는 950℃의 저온에서 소결된 Pb0.38La0.08(Zr0.65Ti0.35)O3 세라믹스의 electrocaloric 특성 및 강유전 특성을 조사하여 다음과 같은 결과를 얻었다. 시편은 삼방정계(rhombohedral phase) 상을 나타내고 있으며, 평균 입경 사이즈는 1.94 um를 나타내었다. 히스테리시스 곡선은 온도가 증가할수록 슬림하게 되었으며, 항전계와 잔류분극 또한 점점 작아지는 경향을 나타내었다. 온도별 ΔT는 Maxwell 방정식을 사용하여 계산되었고, 30 kV/cm의 전계를 인가할 때 190℃에서 ∼0.19℃로 가장 큰 온도 변화를 나타내었다.

In this study, in order to develop the composition ceramics with the excellent electrocaloric properties, (Pb0.88La0. 08)(Zr0.65Ti0.35)O3 ceramics were fabricated by the conventional solid-state method. Electrocaloric effects of (Pb0.88La0.08)(Zr 0.65Ti0.35)O3 ferroelectric ceramics were investigated and discussed using the characteristics of P-E hysteresis loops at wide temperature range from room temperature to 220 . The temperature change ΔT due to the electrocaloric effec t was calculated by Maxwell’s relations, and reached the maximum of 0.19 at 190 under applied electric field of 30 kV/cm.

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Electrocaloric Effect of Low Temperature Sintering (Pb0.88La0.08)(Zr0.65Ti0.35)O3 Ceramics
J Electr Electron Mater. 2015;28(6):375-378.   Published online June 1, 2015
Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.

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Electrocaloric Effect of Low Temperature Sintering (Pb0.88La0.08)(Zr0.65Ti0.35)O3 Ceramics
J Electr Electron Mater. 2015;28(6):375-378.   Published online June 1, 2015
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