Direct and indirect electrocaloric measurements using multilayer capacitors

被引：182

作者：

Kar-Narayan, S. ^{[1
]}

Mathur, N. D. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci, Cambridge CB2 3QZ, England

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

ROOM-TEMPERATURE; CONSTANT-CURRENT; MICROSTRUCTURE; HYSTERESIS; CERAMICS;

D O I：

10.1088/0022-3727/43/3/032002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the discovery of serendipitous electrocaloric (EC) effects in commercial multilayer capacitors based on ferroelectric BaTiO3. Direct thermometry records similar to 0.5 K changes due to 300 kV cm(-1), over a wide range of temperatures near and above room temperature. Similar results are obtained indirectly, via thermodynamic analysis of ferroelectric hysteresis loops. We compare and contrast these two results. Optimized EC multilayer capacitors could find applications in future cooling technologies.

引用

页数：4

共 24 条

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