Phase transitions and magnetoelectroelastic instabilities in Pb(Fe1/2Nb1/2)O-3 multiferroic ceramics

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dc.contributor.authorFraygola, B.
dc.contributor.authorFrizon, N.
dc.contributor.authorLente, M. H. [UNIFESP]
dc.contributor.authorCoelho, A. A.
dc.contributor.authorGarcia, D.
dc.contributor.authorEiras, J. A.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2016-01-24T14:31:19Z
dc.date.available2016-01-24T14:31:19Z
dc.date.issued2013-03-01
dc.description.abstractMagnetoelectric coupling can be observed in multiferroic materials in the regions where magnetic and ferroelectric ordering coexist and in many cases is mediated via lattice strain. Pb(Fe1/2Nb1/2)O-3 (PFN) is a well-known multiferroic, presenting ferroelectric ordering (below T-C = 380 K) and a Neel temperature (antiferromagnetic ordering) T-N = 143 K. However, recent experimental results suggest that PFN can display ferromagnetic ordering at higher temperatures and a still unclear sequence of phase transitions. in this work, high-density PFN ceramics were prepared by a conventional ceramic method. Dielectric, magnetic and anelastic responses were measured as a function of temperature. the experimental results present complementary evidence of anomalies (additional to those which can be directly associated with the reported transitions at T-C and T-N) which cold be associated with a structural phase transition (T similar to 315 K), an antiferromagnetic ferromagnetic phase transition (110 K) and magnetoelectroelastic instabilities around 250 K. (C) 2012 Acta Materialia Inc. Published by Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Fed Sao Carlos, Dpto Fis, Grp Ceram Ferroeletr GCFerr, BR-13565670 Sao Carlos, SP, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Dept Ciencia & Tecnol, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Estadual Campinas, LPCM DFA IFGW, Campinas, SP, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Ciencia & Tecnol, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIDFAPESP: 2008/04025-0
dc.description.sponsorshipIDFAPESP: 2010/11187-6
dc.format.extent1518-1524
dc.identifierhttp://dx.doi.org/10.1016/j.actamat.2012.11.029
dc.identifier.citationActa Materialia. Oxford: Pergamon-Elsevier B.V., v. 61, n. 5, p. 1518-1524, 2013.
dc.identifier.doi10.1016/j.actamat.2012.11.029
dc.identifier.issn1359-6454
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/36029
dc.identifier.wosWOS:000316036800010
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofActa Materialia
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.subjectMultiferroicen
dc.subjectFerroelectricsen
dc.subjectMagnetics proprietiesen
dc.titlePhase transitions and magnetoelectroelastic instabilities in Pb(Fe1/2Nb1/2)O-3 multiferroic ceramicsen
dc.typeinfo:eu-repo/semantics/article
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