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dc.contributor.authorLevit Valenzuela, Rafael
dc.contributor.authorOchoa Guerrero, Diego A.
dc.contributor.authorMartínez García, Julio Cesar
dc.contributor.authorGarcía García, José Eduardo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2017-11-30T17:44:21Z
dc.date.available2017-11-30T17:44:21Z
dc.date.issued2017-11-10
dc.identifier.citationLevit, R., Ochoa, D. A., Martínez-García, J. C., Garcia, J. E. Insight into the dynamics of low temperature dielectric relaxation of ordinary perovskite ferroelectrics. "New journal of physics", 10 Novembre 2017, vol. 19, p. 113013-1-113013-9.
dc.identifier.issn1367-2630
dc.identifier.urihttp://hdl.handle.net/2117/111396
dc.description.abstractThe temperature dependence of the dielectric response of ordinary ferroelectric materials exhibits a frequency-independent anomalous peak as a manifestation of the ferroelectric to paraelectric phase transition. A second anomaly in the permittivity has been reported in different ferroelectric perovskite-type systems at low temperatures, often at cryogenic temperatures. This anomaly manifests as a frequency-dependent local maximum, which exhibits similar characteristics to that observed in relaxor ferroelectrics around their phase transition. The origin of this unexpected behavior is still controversial. In order to clarify this phenomenon, a model-free route solution is developed in this work. Our findings reveal the same critical linear pattern/glass-like freezing behavior previously observed for glass-forming systems. Contrary to current thought, our results suggest that a critical-like dynamic parameterization could provide a more appropriate solution than the conventional Vogel–Fulcher–Tammann equation. The implemented methodology may open a new pathway for analyzing relaxation phenomena in other functional materials like relaxor ferroics.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshDielectric relaxation
dc.subject.lcshFerroelectricity
dc.subject.otherdielectric properties
dc.subject.otherdielectric relaxation
dc.subject.otherferroelectrics
dc.subject.othersuper-Arrhenius behavior
dc.titleInsight into the dynamics of low temperature dielectric relaxation of ordinary perovskite ferroelectrics
dc.typeArticle
dc.subject.lemacRelaxació dielèctrica
dc.subject.lemacFerroelectricitat
dc.contributor.groupUniversitat Politècnica de Catalunya. CEMAD - Caracterització Elèctrica de Materials i Dispositius
dc.identifier.doi10.1088/1367-2630/aa91c8
dc.relation.publisherversionhttp://iopscience.iop.org/article/10.1088/1367-2630/aa91c8
dc.rights.accessOpen Access
drac.iddocument21603318
dc.description.versionPostprint (published version)
upcommons.citation.authorLevit, R., Ochoa, D. A., Martínez-García, J. C., Garcia, J. E.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameNew journal of physics
upcommons.citation.volume19
upcommons.citation.startingPage113013-1
upcommons.citation.endingPage113013-9


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