| 准同型相界钛酸铋钠基铁电固溶体的电卡效应研究 |
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| 引用本文： | 唐瑾,王飞飞,李岩,田承越,汪青,石旺舟. 准同型相界钛酸铋钠基铁电固溶体的电卡效应研究[J]. 上海师范大学学报(自然科学版), 2015, 44(2): 127-131 |
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| 作者姓名： | 唐瑾 王飞飞 李岩 田承越 汪青 石旺舟 |
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| 作者单位： | 上海师范大学,上海师范大学,上海师范大学,上海师范大学,上海师范大学,上海师范大学 |
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| 基金项目： | 国家自然科学基金(11204179,61376010);上海市教委“晨光计划”(11CG49) |
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| 摘 要： | 利用铁电材料的电卡效应实现致冷成为当前国内外的研究热点之一.基于Maxwell关系,围绕着准同型相界组分的Bi0.5Na0.5Ti O3基无铅铁电固溶体,研究了其电卡效应,结果表明:该体系在5 k V/mm的外电场下,显示出优异的致冷特性,温度的变化量可达到1.15 K,相应的致冷强度可达0.23 K·mm/k V,在全新的固态致冷器件中显示出应用前景.
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| 关 键 词： | 电卡 无铅 铁电致冷 准同型相界 |
| 收稿时间： | 2014-09-02 |
The electrocaloric effect of Bi0.5Na0.5TiO3-based solid solution with the composition around the morphotropic phase boundary |
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| TANG Jin,WANG Feifei,LI Yan,TIAN Chengyue,WANG Qing and SHI Wangzhou. The electrocaloric effect of Bi0.5Na0.5TiO3-based solid solution with the composition around the morphotropic phase boundary[J]. Journal of Shanghai Normal University(Natural Sciences), 2015, 44(2): 127-131 |
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| Authors: | TANG Jin WANG Feifei LI Yan TIAN Chengyue WANG Qing SHI Wangzhou |
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| Affiliation: | College of Mathematics and Sciences,Shanghai Normal University,College of Mathematics and Sciences,Shanghai Normal University,College of Mathematics and Sciences,Shanghai Normal University,College of Mathematics and Sciences,Shanghai Normal University,College of Mathematics and Sciences,Shanghai Normal University and College of Mathematics and Sciences,Shanghai Normal University |
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| Abstract: | Recently,the electrocaloric effect of ferroelectric materials has attracted much attention at home and abroad due to its potential applications in solid-state refrigeration.In this paper,based on Maxwell relations,we study the electrocaloric effect of Bi0.5Na0.5TiO3-based lead-free ferroelectric quasi-solid solution with the composition focusing around the morphotropic phase boundary.The results show that the system has excellent refrigeration characteristics under external electric field of 5 kV/mm and the amount of change in temperature reaches 1.15 K.The corresponding refrigeration strength reaches 0.23 K·mm/kV,showing the prospect of applications in new environmental-friendly solid-state cooling devices. |
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| Keywords: | electrocaloric effect lead-free ferroelectric refrigeration morphotropic phase boundary |
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