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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Pyroelectric and electrocaloric effect of (111)-oriented 0.9PMN-0.1 PT single crystal
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Pyroelectric and electrocaloric effect of (111)-oriented 0.9PMN-0.1 PT single crystal

机译：（111）定向0.9PMN-0.1 PT单晶的热电和电热效应

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摘要

In this paper, the polarization vs. electric field hysteresis loops of (11 l)-oriented 0.9PbMg_(1/3)Nb_(2/3)O_3-0.1PbTiO_3 (0.9PMN-0.1PT) single crystal at different temperatures (20-110°C) were measured. The adiabatic temperature change AT of (11 l)-oriented 0.9PMN-0.1PT single crystal due to the application or withdraw of electric field were calculated through the thermodynamic relation. The largest temperature change AT achieves ~1 K with only a change of 40 kV/cm electric field, the mechanism of the electrocaloric effect (ECE) is discussed for 0.9PMN-0.1PT crystal. The pyroelectric coefficient of 0.9PMN-0.1PT under bias field was calculated according to the data of hysteresis loop.
机译：本文研究了在不同温度下（11 l）取向的0.9PbMg_（1/3）Nb_（2/3）O_3-0.1PbTiO_3（0.9PMN-0.1PT）单晶的极化与电场磁滞回线（20 -110℃）。通过热力学关系，计算了（11 l）取向的0.9PMN-0.1PT单晶由于施加或撤出电场而产生的绝热温度变化AT。最大的温度变化AT仅在40 kV / cm电场变化下即可达到〜1 K，讨论了0.9PMN-0.1PT晶体的电热效应（ECE）机理。根据磁滞回线的数据计算出在偏置场下0.9PMN-0.1PT的热电系数。

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