中国物理B ›› 2017, Vol. 26 ›› Issue (11): 117701-117701.doi: 10.1088/1674-1056/26/11/117701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

On the parameters for electrocaloric effect predicted by indirect method

Hong-Bo Liu(刘宏波)   

  1. School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
  • 收稿日期:2017-06-29 修回日期:2017-08-05 出版日期:2017-11-05 发布日期:2017-11-05
  • 基金资助:
    Project supported by the Natural Science Foundation of Shanghai, China (Grant No. 17ZR1447200).

On the parameters for electrocaloric effect predicted by indirect method

Hong-Bo Liu(刘宏波)   

  1. School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
  • Received:2017-06-29 Revised:2017-08-05 Online:2017-11-05 Published:2017-11-05
  • Contact: Hong-Bo Liu E-mail:bohongliu@gmail.com
  • Supported by:
    Project supported by the Natural Science Foundation of Shanghai, China (Grant No. 17ZR1447200).

摘要: The influences of specific heat capacity CP, temperature step △T, electric field step △ E, and initial electric field E1 on predicted electrocaloric (EC) temperature △ T of monodomain BaTiO3 are examined by combining the Maxwell equation and phenomenological theory. Since the procedure is similar to indirect measurement of the EC effect, the results can serve as a reference for experiments. The results suggest that (i) it is reasonable to use zero-field CP, (ii) optimized △ T should be 2 K, (iii) it is better to keep △ E<EC, and (iv) E1<EC. Here, EC is the coercive field of material.

关键词: electrocaloric effect, indirect method, BaTiO3

Abstract: The influences of specific heat capacity CP, temperature step △T, electric field step △ E, and initial electric field E1 on predicted electrocaloric (EC) temperature △ T of monodomain BaTiO3 are examined by combining the Maxwell equation and phenomenological theory. Since the procedure is similar to indirect measurement of the EC effect, the results can serve as a reference for experiments. The results suggest that (i) it is reasonable to use zero-field CP, (ii) optimized △ T should be 2 K, (iii) it is better to keep △ E<EC, and (iv) E1<EC. Here, EC is the coercive field of material.

Key words: electrocaloric effect, indirect method, BaTiO3

中图分类号:  (Pyroelectric and electrocaloric effects)

  • 77.70.+a