Enhanced electrocaloric effect in glass-added 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics

被引：9
|
作者：
Srikanth, K. S. [1 ]
Patel, Satyanarayan [1 ]
Vaish, Rahul [1 ]
机构：
[1] Indian Inst Technol Mandi, Sch Engn, Kamand 175005, HP, India
来源：
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY | 2017年 / 53卷 / 02期
关键词：
Electrocaloric; Glass; Lead-free; Ferroelectric; SYSTEM;
D O I：
10.1007/s41779-017-0063-5
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present study, 3BaO-3TiO(2)-B2O3 (BTBO) glass-added 0.94Bi(0.5)Na(0.5)TiO(3)-0.06BaTiO(3) (BNT-BT) ferroelectric ceramics were synthesized using a conventional solid-state reaction methodology. The electrocaloric effect on glass-added ceramics was calculated using Maxwell relations. The maximum adiabatic temperature changes of 0.21, 0.25, and 0.14 K were obtained at 40 kV/cm for 2, 4, and 6% glass addition which are significantly higher than those of the pure sample (0.08 K) under study. The results reveal that glass addition up to 4% resulted in enhanced electrocaloric response. Further, the effect of glass addition on the dielectric properties was investigated. The dielectric constant decreases with glass addition compared with pure BNT-BT at 303 K.
引用
收藏
页码：523 / 529
页数：7
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