Large electrocaloric effect obtained in Ba(SnxTi1-x)O-3 lead-free ceramics using direct and indirect measurements

被引：7
|
作者：
Li, Jiang [1 ]
Li, Dan-Dan [1 ]
Lu, Biao [1 ]
Yao, Ying-Bang [1 ]
Tao, Tao [1 ]
Liang, Bo [1 ]
Lu, Wen-Hui [1 ]
Luo, Ge-Li [1 ]
Lu, Sheng-Guo [1 ]
机构：
[1] Guangdong Univ Technol, Sch Mat & Energy, Guangdong Prov Key Lab Funct Soft Condensed Matte, Guangdong Prov Res Ctr Smart Mat & Energy Convers, Guangzhou 510006, Guangdong, Peoples R China
来源：
JOURNAL OF ADVANCED DIELECTRICS | 2018年 / 8卷 / 05期
关键词：
BaSnTiO3; ceramic; direct measurement; electrocaloric effect;
D O I：
10.1142/S2010135X18500388
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The electrocaloric effect (ECE) in lead-free BaSnxTi1-xO3 (BSnT, x = 0.05, 0.10 and 0.15) ceramics were investigated using a direct ECE measurement. Results indicate that the maximum ECE occurs near the Curie temperature and it slightly shifts towards high temperatures. The directly measured ECE is larger than that calculated using the Maxwell relation and P-E loops. A maximum electrocaloric efficiency Delta T/Delta E = 0.49 x 10(-6) KmV(-1) was procured for the composition with x = 0.15 at T = 299.2K. And it also shows a broad peak in the temperature range of 250-320 K.
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页数：6
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