A giant electrocaloric effect of a Pb0.97La0.02(Zr0.75Sn0.18Ti0.07)O3 antiferroelectric thick film at room temperature

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dc.contributor.authorZhao, Ye
dc.contributor.authorHao, Xihong
dc.contributor.authorZhang, Qi
dc.date.accessioned2016-10-27T15:00:17Z
dc.date.available2016-10-27T15:00:17Z
dc.date.issued2014-12-19
dc.description.abstractA 2-µm-Pb0.97La0.02(Zr0.75Sn0.18Ti0.07)O3 (PLZST) antiferroelectric (AFE) thick film with tetragonal structure was deposited on LaNiO3/Si (100) substrates via a sol-gel technique. The electrocaloric effect (ECE) of the PLZST thick film is investigated under the functions of external electric field and temperature. Giant ECEs (∆T = 53.8 oC and ∆S = 63.9 J·K-1·kg-1) are received at 5 oC, which is attributed to a field-induced AFE to ferroelectric (FE) phase transition. Moreover, a large ∆T of above 30 oC is remains at temperature range from 5 oC to 25 oC. The maximum electrocaloric coefficient (ξmax = 0.060 K·cm/kV) and refrigeration efficiency (COP = 18) of the film are also obtained at 5 oC. At room temperature, the values of ∆T, ∆S, COP and ξmax are 35.0 oC, 39.0 J·K-1·kg-1, 14 and 0.039 K·cm/kV at 900 kV/cm, respectively. The AFE thick films with giant ECEs are promising candidates for applications in cooling systems at room temperature.en_UK
dc.identifier.citationZhao, Y., Hao, X., Zhang, Q. (2014) A giant electrocaloric effect of a Pb0.97La0.02(Zr0.75Sn0.18Ti0.07)O3 antiferroelectric thick film at room temperature, Journal of Materials Chemistry C, Vol. 3, Iss. 8, pp. 1694-1699en_UK
dc.identifier.issn2050-7526
dc.identifier.urihttp://dx.doi.org/10.1039/c4tc02381a
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/10893
dc.language.isoenen_UK
dc.publisherRoyal Society of Chemistryen_UK
dc.rightsPublished by Royal Society of Chemistry. This is the Author Accepted Manuscript. This article may be used for personal use only. The final published version (version of record) is available online at 10.1039/c4tc02381a. Please refer to any applicable publisher terms of use.en_UK
dc.subjectECEen_UK
dc.subjectPLZST AFE thick filmen_UK
dc.subjectAFE-FE phase transitionen_UK
dc.subjectRoom temperatureen_UK
dc.titleA giant electrocaloric effect of a Pb0.97La0.02(Zr0.75Sn0.18Ti0.07)O3 antiferroelectric thick film at room temperatureen_UK
dc.typeArticleen_UK

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