Electrocaloric properties of Sr and Sn doped BCZT lead-free ceramics

IF 0.9 4区 物理与天体物理 Q4 PHYSICS, APPLIED
S. Patel, Manish Kumar
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引用次数: 3

Abstract

In the present work, the electrocaloric (EC) effect in lead-free Sr and Sn doped (Ba0.85 Ca0.075 Sr0.075 )(Zr0.1 Ti0.88 Sn0.02 )O3 ceramic prepared by solid-state method has been investigated. The phase purity and pure perovskite phase formation with Sr and Sn doping is confirmed by X-ray diffraction. The adiabatic temperature change ΔT (due to the EC effect), entropy change (ΔS) and refrigeration capacity (RC) are estimated under various electric fields. The maximum peak values of ΔT, ΔS and RC are found as 1.5 K, 1.8 J/kg.K and 2.75 J/kg, respectively under the applied electric field of 33 kV/cm at 305 K. It is also observed that the ΔT, ΔS and RC decreases with an increase in applied temperature. Moreover, the estimated values of EC properties are significantly high which indicates that fabrication of Sr and Sn doped lead-free ceramics can be advantageous for EC applications.
Sr和Sn掺杂BCZT无铅陶瓷的电热性能
本文研究了固态法制备无铅Sr和Sn掺杂(Ba0.85 Ca0.075 Sr0.075)(Zr0.1 Ti0.88 Sn0.02)O3陶瓷的电热效应。通过x射线衍射证实了Sr和Sn掺杂后的相纯度和纯钙钛矿相的形成。计算了不同电场作用下的绝热温度变化ΔT (EC效应)、熵变ΔS和制冷量RC。ΔT、ΔS和RC的最大峰值分别为1.5 K、1.8 J/kg。在305k、33kv /cm的外加电场作用下,分别为K和2.75 J/kg。随着温度的升高,材料的ΔT、ΔS和RC均呈下降趋势。此外,电化学性能的估计值也非常高,这表明制备Sr和Sn掺杂的无铅陶瓷对电化学应用是有利的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
1.90
自引率
10.00%
发文量
84
审稿时长
1.9 months
期刊介绍: EPJ AP an international journal devoted to the promotion of the recent progresses in all fields of applied physics. The articles published in EPJ AP span the whole spectrum of applied physics research.
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