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Chin. Phys. B, 2018, Vol. 27(12): 127701    DOI: 10.1088/1674-1056/27/12/127701
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Effect of an electric field on the electrocaloric response of ferroelectrics

Hongbo Liu(刘宏波)
School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Abstract  

The electrocaloric effect of the model ferroelectric BaTiO3 was investigated using phenomenological theory. The results indicate that the applied electric field strength is a key factor for the induced electrocaloric response and there are two distinguishing electrocaloric responses. When a moderate electric field is applied, the electrocaloric temperature variation is small but the electrocaloric strength is high. In contrast, the electrocaloric temperature variation is large but electrocaloric strength is low when a very high electric field is applied. These results are consistent with the experimental observations on BaTiO3 based bulk and thin film ferroelectric materials.

Keywords:  BaTiO3      ferroelectrics      electrocaloric effect  
Received:  13 September 2018      Revised:  15 October 2018      Accepted manuscript online: 
PACS:  77.70.+a (Pyroelectric and electrocaloric effects)  
Fund: 

Project supported by the National Natural Science Foundation of China (Grant No. 11704242) and the Natural Science Foundation of Shanghai, China (Grant No. 17ZR1447200).

Corresponding Authors:  Hongbo Liu     E-mail:  bohongliu@gmail.com

Cite this article: 

Hongbo Liu(刘宏波) Effect of an electric field on the electrocaloric response of ferroelectrics 2018 Chin. Phys. B 27 127701

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