Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440376 | Journal of the European Ceramic Society | 2017 | 4 Pages |
Abstract
A study was made of the electrocaloric (EC) effect's stability in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements. The sample was subjected to 106 unipolar cycles at an electric field amplitude of 110Â kVÂ cmâ1. The dielectric and ferroelectric properties of the material change only slightly, while the microstructure does not reveal any detrimental evidence of the cycling. The initially measured EC temperature change of 1.45Â K decreases by only 0.01Â K upon cycling, exhibiting a fatigue-less behavior. The results justify the choice of relaxor multilayers as the working bodies in EC cooling devices, where the material should withstand numerous electric field cycles with high amplitudes, sometimes exceeding 100Â kVÂ cmâ1.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Lovro FulanoviÄ, Jurij Koruza, Nikola Novak, Florian Weyland, Barbara MaliÄ, Vid Bobnar,