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Weak ferromagnetism in poly(3-methylthiophene)(PMTh)

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dc.contributor.authorCorrea, A. A.
dc.contributor.authorWalmsley, L.
dc.contributor.authorBulhoes, LOS
dc.contributor.authorOrtiz, W. A.
dc.contributor.authorde Oliveira, AJA
dc.contributor.authorPereira, E. C.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:05Z
dc.date.available2014-05-20T15:24:05Z
dc.date.issued2001-03-15
dc.description.abstractFerromagnetic behaviour at 300 K has been observed from SQUID experiments in ClO4- doped PMTh, the samples were prepared electrochemically at 25 degreesC in acetonitrile with 0.1M LiClO4 and then partially reduced. Atomic absorption analysis discards magnetic particles contamination. Hysteresis curves were observed for pressed pellets in ail range of temperatures (300K-2K). The remanence at 300 K and pressed at 250 bar was around 8.06x10(-4) emu/g with coercitivity of 130 Oe. The influence of water content in the solvent during the sample synthesis and the pressure is shown. We discuss a model that explains our data in terms of the anisotropic superexchange Dziatoshinski-Moriya interaction giving rise to weak ferromagnetism.en
dc.description.affiliationUniv Fed Sao Carlos, Dept Quim, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Fis, Inst Geociencias & Ciências Exatas, BR-13500970 Rio Claro, SP, Brazil
dc.description.affiliationUniv Fed Sao Carlos, Dept Fis, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Fis, Inst Geociencias & Ciências Exatas, BR-13500970 Rio Claro, SP, Brazil
dc.format.extent1836-1837
dc.identifierhttp://dx.doi.org/10.1016/S0379-6779(00)01075-4
dc.identifier.citationSynthetic Metals. Lausanne: Elsevier B.V. Sa, v. 121, n. 1-3, p. 1836-1837, 2001.
dc.identifier.doi10.1016/S0379-6779(00)01075-4
dc.identifier.issn0379-6779
dc.identifier.urihttp://hdl.handle.net/11449/34745
dc.identifier.wosWOS:000168831200349
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSynthetic Metals
dc.relation.ispartofjcr2.526
dc.relation.ispartofsjr0,672
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectmagnetic measurementspt
dc.subjectpolythiophene and derivativespt
dc.subjectelectrochemical polymerizationpt
dc.subjectelectrochemical dopingpt
dc.titleWeak ferromagnetism in poly(3-methylthiophene)(PMTh)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claropt
unesp.departmentFísica - IGCEpt

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Rio Claro - IGCE - Instituto de Geociências e Ciências Exatas