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

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Abstract

The electrocaloric effect of BaTiO3multilayer 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.
Original languageEnglish
Article number104102
JournalJournal of Applied Physics
Volume108
Issue number10
DOIs
Publication statusPublished - 15 Nov 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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