Large electrocaloric effect in BaTiO3 based multilayer ceramic capacitors

被引：0

作者：

LU Biao ^{[1
]}

WEN XinHua ^{[1
]}

TANG ZhenHua ^{[1
]}

LIANG Bo ^{[1
]}

TAO Tao ^{[1
]}

XIE ZhiWei ^{[1
]}

ZHANG TianFu ^{[2
]}

TANG XinGui ^{[2
]}

XIANG Yong ^{[3
]}

LIAO Jie ^{[3
]}

LU ShengGuo ^{[1
]}

机构：

[1] Guangdong Provincial Key Laboratory of Functional Soft Matter, School of Materials and Energy, Guangdong University of Technology

[2] School of Physics and Electronics, Guangdong University of Technology

[3] EYANG Technology Development Co.Ltd.

来源：

Science China(Technological Sciences) | 2016年 / 59卷 / 07期

基金：

中国国家自然科学基金;

关键词：

multilayer ceramic capacitors; maxwell relations; electrocaloric effect; polarization–electric field hysteresis loop; differential scanning calorimetry;

D O I：

暂无

中图分类号：

TQ174.7 [陶瓷制品]; TM53 [电容器];

学科分类号：

080503 ; 080801 ;

摘要：

The electrocaloric effect(ECE) of multilayer ceramic capacitor(MLCC) of Y5 V type was directly measured via a differential scanning calorimetry(DSC) method and a reference resistor was used to calibrate the heat flow due to the heat dissipation. The results are compared with those calculated from Maxwell relations by using the polarization data obtained from the polarization–electric field hysteresis loops. The direct method shows a larger ECE temperature change, which is accounted for the situation approaches an ideal condition. For the indirect method using Maxwell relations, only the polarization projection along the electric field was taken into account, which will be less than the randomly distributed real polarizations that contribute to the ECE. The MLCCs exhibit a broad peak of ECE around 80 C, which will be favorite for the practical ECE cooling devices.

引用

页码：1054 / 1058

页数：5

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