期刊
CERAMICS INTERNATIONAL
卷 42, 期 1, 页码 229-233出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.08.097
关键词
Electrocaloric effect; Antiferroelectrics; Ceramics
资金
- Abdus Salam ICTP [NET-43]
The electrocaloric effect is studied in lanthanum-modified lead zirconate titanate antiferroelectric ceramics by using direct and indirect methods. A maximum value for the temperature change (Delta T) is obtained around a critical electric field (the electric field which forces the antiferroelectric ferroelectric phase switching). An abrupt change in the polarization occurs at that critical field, which provides an adiabatic increasing in the temperature of the material. The temperature dependence for Delta T shows a maximum value around 348 K, which could be related to the influence of the temperature on the relative stabilities for the ferroelectric and antiferroelectric phases. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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