Anisotropy of the Electrocaloric Effect in Lead-Free Relaxor Ferroelectrics

The highly anisotropic electrocaloric effect, evidenced by both direct measurements and a descriptive theoretical model in lead‐free relaxor ferroelectric Sr0.75Ba0.25Nb2O6 single crystals, can be exploited by producing low‐cost grain‐oriented ceramics. Combined with the broad‐temperature‐range cool...

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Bibliographic Details
Published in:Advanced energy materials 2014-06, Vol.4 (9), p.np-n/a
Main Authors: Goupil, Florian Le, Axelsson, Anna-Karin, Dunne, Lawrence J., Valant, Matjaz, Manos, George, Lukasiewicz, Tadeusz, Dec, Jan, Berenov, Andrey, Alford, Neil McN
Format: Article
Language:English
Subjects:
Anisotropy
bulk single crystals
Ceramics
electrocaloric effect
Ferroelectric materials
Lead free
Mathematical models
Nanostructure
Refrigeration
Relaxors
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Summary:The highly anisotropic electrocaloric effect, evidenced by both direct measurements and a descriptive theoretical model in lead‐free relaxor ferroelectric Sr0.75Ba0.25Nb2O6 single crystals, can be exploited by producing low‐cost grain‐oriented ceramics. Combined with the broad‐temperature‐range cooling regime provided by their polar nanoregions, these materials may be the key to future cost‐ and energy‐efficient solid‐state refrigeration.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.201301688