Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 43, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/43/3/032002
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Funding
- UK EPSRC [EP/E03389X]
- EPSRC [EP/E03389X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E03389X/1] Funding Source: researchfish
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We report the discovery of serendipitous electrocaloric (EC) effects in commercial multilayer capacitors based on ferroelectric BaTiO3. Direct thermometry records similar to 0.5 K changes due to 300 kV cm(-1), over a wide range of temperatures near and above room temperature. Similar results are obtained indirectly, via thermodynamic analysis of ferroelectric hysteresis loops. We compare and contrast these two results. Optimized EC multilayer capacitors could find applications in future cooling technologies.
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