Kinetic electrocaloric effect and giant net cooling of lead-free ferroelectric refrigerants

被引：49

作者：

Bai, Yang ^{[1
,2
]}

Zheng, Guang-Ping ^{[1
]}

Shi, San-Qiang ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

[2] Univ Sci & Technol Beijing, Key Lab Environm Fracture, Minist Educ, Beijing 100083, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 108卷 / 10期

基金：

美国国家科学基金会;

关键词：

HYSTERESIS; CERAMICS; MODEL;

D O I：

10.1063/1.3511342

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electrocaloric effect of BaTiO3 multilayer thick film structure was investigated by direct measurement using differential scanning calorimeter. The samples show a giant electrocaloric effect of 0.89 J/g under E=176 kV/cm, which also depends on the varying rate of applied field, following a general power-law relation. Based on the large net-cooling (0.37 J/g) resulting from the difference in the varying rates of rising and falling fields, the kinetic electrocaloric effect provides a solution for the design of refrigeration cycle in ferroelectric microrefrigerator. (C) 2010 American Institute of Physics. [doi:10.1063/1.3511342]

引用

页数：4

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