硅酸盐学报2017，Vol.45Issue(3)：333-338,6.DOI:10.14062/j.issn.0454-5648.2017.03.02
BaZr0.2Ti0.8O3无铅厚膜陶瓷的电卡效应
Electrocaloric Effect of BaZr0.2Ti0.8O3 Lead-free Thick Film Ceramic
摘要
Abstract
Barium zirconate titanate (i.e., Ba(Zr0.2Ti0.8)O3) thick film ceramics were prepared by a tape-casting method. Their structures, morphologies, and electric properties were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), impedance analysis and ferroelectric analysis, respectively. The electrocaloric effect,i.e., isothermal entropy changes and adiabatic temperature changes, was calculated by the Maxwell equations. According to the results by XRD and SEM, the thick film ceramics obtained are a pure and dense perovskite structure. The dielectric analyses indicates that the Ba(Zr0.2Ti0.8)O3thick film ceramics show the characteristics of relax or ferroelectrics. The polarization–electric field (P–E) hysteresis loops reveal greater polarizations, and the ceramics can withstand an electric field of 20MV/m. The adiabatic temperature change,△T, calculated according to the Maxwell equations and the polarization versus temperature extracted from theP–E hysteresis loops are approximately 1.2K at 100℃ and 20MV/m.关键词
锆钛酸钡/厚膜陶瓷/电滞回线/电卡效应Key words
barium zirconate titanate/thick film ceramics/polarization-electric field hysteresis loop/electrocaloric effect分类
化学化工引用本文复制引用
简晓东,路标,李丹丹,姚英邦,梁波,陶涛,鲁圣国..BaZr0.2Ti0.8O3无铅厚膜陶瓷的电卡效应[J].硅酸盐学报,2017,45(3):333-338,6.基金项目
国家自然科学基金(51372042) （51372042）
国家自然科学基金–广东省联合基金(U1501246) （U1501246）
广东省自然科学基金重大基础研究培育项目(2015A030308004) （2015A030308004）
广东省教育厅重大基础研究培育项目(2014GKXM039)资助. （2014GKXM039）
