Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24308
Title: Thermo-electrical energy conversions in Bi0.5Na0.5TiO3-BaTiO3 thin films prepared by sol-gel method
Authors: Zheng, XC
Zheng, GP 
Lin, Z
Jiang, ZY
Keywords: Lead-free ferroelectrics
Thin films
Pyroelectric properties
Electro-caloric effect
Sol-gel preparation
Issue Date: 2012
Publisher: Elsevier
Source: Thin solid films, 2012, v. 522, p. 125-128 How to cite?
Journal: Thin solid films 
Abstract: Solid solution (1-x)Bi0.5Na0.5TiO3-xBaTiO(3) (BNT-xBT) thin films with x=0, 0.1, 0.9 and 1.0 are synthesized by sol-gelmethod. The as-prepared BNT-xBT films are crystallized into a single perovskite phase. The temperature-dependent polarizations of the thin films are measured to characterize their performances in thermo-electrical energy conversions. In BNT-0.1BT it is found that the electro-caloric refrigeration temperature change is 3.3 degrees C with the application of an electric field of 862 kV/cm at 46 degrees C. The density of electrical energy generating from a 10 degrees C temperature variation cycle is 0.68 J/cm(3). The results demonstrate that BNT-0.1BT lead-free ferroelectrics are excellent environmental-friendly energy materials for electro-caloric refrigeration and pyroelectric energy harvesting applications near room temperature.
URI: http://hdl.handle.net/10397/24308
ISSN: 0040-6090
EISSN: 1879-2731
DOI: 10.1016/j.tsf.2012.08.052
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