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

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

2010-05-04

arxiv.org/abs/1005.0431v2

Physics

Condensed Matter

Materials Science

Scientific paper

Giant electrocaloric (EC) effect is observed in BaTiO3 multilayer thick film structure. The temperature change is as high as 4.0 oC under an applied electric field of 352 kV/cm. Most importantly, the EC effect is found to depend on the varying rate of the applied field. Based on the giant net cooling (~0.37 J/g) resulting from the difference in the varying rates of rising and falling fields, the kinetic EC effect provides an effective solution for the design of refrigeration cycle in ferroelectric micro-refrigerator.

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