Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6635
Title: Direct measurement of giant electrocaloric effect in BaTiO₃ multilayer thick film structure beyond theoretical prediction
Authors: Bai, Y
Zheng, G 
Shi, SQ 
Keywords: Adsorption
Differential scanning calorimetry
Electric conductivity measurement
Electric fields
Multilayers
Polarization
Temperature
Thick films
Issue Date: May-2010
Publisher: American Institute of Physics
Source: Applied physics letters, May 2010, v. 96, no. 19, 192902, p.1-3 How to cite?
Journal: Applied physics letters 
Abstract: The electrocaloric (EC) effect of BaTiO₃ multilayer thick filmstructure was investigated by direct measurement and theoretical calculation. The samples were prepared by the tape-casting method, which had 180 dielectric layers with an average thickness of 1.4 μm. The thermodynamic calculation based on the polarization-temperature curves predicted a peak heat adsorption of 0.32 J/g at 80 °C under 176 kV/cm electric field. The direct measurement via differential scanning calorimeter showed a much higher EC effect of 0.91 J/g at 80 °C under same electric field. The difference could result from the different trends of changes of electric polarization and lattice elastic energy under ultrahigh electric field.
URI: http://hdl.handle.net/10397/6635
ISSN: 0003-6951 (print)
1077-3118 (online)
DOI: 10.1063/1.3430045
Rights: Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Y. Bai, G. Zheng,& S. Shi, Appl. Phys. Lett. 96, 192902 (2010) http://dx.doi.org/10.1063/1.3430045 and may be found at http://scitation.aip.org/content/aip/journal/apl/96/19/10.1063/1.3430045.
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