Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2478
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dc.contributorDepartment of Applied Physics-
dc.creatorDai, X-
dc.creatorCao, HX-
dc.creatorJiang, Q-
dc.creatorLo, VC-
dc.date.accessioned2014-12-11T08:26:58Z-
dc.date.available2014-12-11T08:26:58Z-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/10397/2478-
dc.language.isoenen_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights© 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Xiao Dai et al., J. Appl. Phys. 106, 034103 (2009) and may be found at http://link.aip.org/link/?jap/106/034103en_US
dc.subjectAnnealingen_US
dc.subjectBarium compoundsen_US
dc.subjectFerroelectric materialsen_US
dc.subjectFerroelectric transitionsen_US
dc.subjectMagnesium compoundsen_US
dc.subjectNanostructured materialsen_US
dc.subjectPyroelectricityen_US
dc.subjectSiliconen_US
dc.subjectStress effectsen_US
dc.subjectSurface tensionen_US
dc.titleInfluence of thermal strains on the electrocaloric and dielectric properties of ferroelectric nanoshellsen_US
dc.typeJournal/Magazine Articleen_US
dc.description.otherinformationAuthor name used in this publication: Veng Cheong Loen_US
dc.identifier.spage1-
dc.identifier.epage7-
dc.identifier.volume106-
dc.identifier.issue3-
dc.identifier.doi10.1063/1.3186057-
dcterms.abstractThe electrocaloric effect and dielectric tunability of BaTiO₃ferroelectric nanoshells on Si and MgO cores are investigated using the modified Landau–Ginzburg–Devonshire theory, in which the surface tension and thermal strain are taken into account. The numerical results exhibit a peak of electrocaloric coefficient near the critical nanoshell thickness accompanied with the size-driven phase transition. In addition to the enhanced adiabatic temperature difference, the compressive thermal strain also significantly improves the dielectric tunability. More importantly, the ferroelectric nanoshell displays pronounced electrocaloric effect: ΔT(Tm)=2.09 K for the nanoshell on Si core and ΔT(Tm)=2.33 K on MgO core, respectively. Essentially, the ferroelectric nanoshell provides an effective means to acquire good electrocaloric effect and high dielectric tunability by adjusting the wall thickness, core radius, annealing temperature, and various core materials, which may effectively contribute to the stress level in the ferroelectric nanoshell.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of applied physics, 1 Aug. 2009, v. 106, no. 3, 034103, p. 1-7-
dcterms.isPartOfJournal of applied physics-
dcterms.issued2009-08-01-
dc.identifier.isiWOS:000269060700061-
dc.identifier.scopus2-s2.0-69149103541-
dc.identifier.eissn1089-7550-
dc.identifier.rosgroupidr45590-
dc.description.ros2009-2010 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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