Magnetoresistance effect in the fluctuating-valence BaSmFe[sub 2]O[sub 5+w] system

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorNakamura, J.
dc.contributor.authorLindén, J.
dc.contributor.authorKarppinen, Maarit
dc.contributor.authorYamauchi, H.
dc.contributor.departmentKemian laitosfi
dc.contributor.departmentDepartment of Chemistryen
dc.contributor.schoolKemian tekniikan korkeakoulufi
dc.contributor.schoolSchool of Chemical Technologyen
dc.date.accessioned2015-10-13T09:01:31Z
dc.date.available2015-10-13T09:01:31Z
dc.date.issued2000
dc.description.abstractThe occurrence of negative magnetoresistance(MR) in semiconductive BaSmFe2O5+w double-perovskite samples is demonstrated. A peak in the MR value was observed at the Verwey–type transition temperature. The transition signifies the charge separation of the Fe2.5+fluctuating mixed valence state into high-spin Fe2+ and Fe3+. The samples were ferrimagnetic with a Curie temperature of ∼710 K. Upon oxidizing/reducing the samples the size of the MR peak and the temperature at which the peak occurred varied. The largest MR value observed was 1.4% at 7 T.en
dc.description.versionPeer revieweden
dc.format.extent1683-1685
dc.format.mimetypeapplication/pdfen
dc.identifier.citationNakamura, J. & Lindén, J. & Karppinen, Maarit & Yamauchi, H. 2000. Magnetoresistance effect in the fluctuating-valence BaSmFe[sub 2]O[sub 5+w] system. Applied Physics Letters. Volume 77, Issue 11. 1683-1685. ISSN 0003-6951 (printed). DOI: 10.1063/1.1310170.en
dc.identifier.doi10.1063/1.1310170
dc.identifier.issn0003-6951 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/18010
dc.identifier.urnURN:NBN:fi:aalto-201510134598
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.ispartofseriesApplied Physics Lettersen
dc.relation.ispartofseriesVolume 77, Issue 11
dc.rights© 2000 AIP Publishing. This is the accepted version of the following article: Nakamura, J. & Lindén, J. & Karppinen, Maarit & Yamauchi, H. 2000. Magnetoresistance effect in the fluctuating-valence BaSmFe[sub 2]O[sub 5+w] system. Applied Physics Letters. Volume 77, Issue 11. 1683-1685. ISSN 0003-6951 (printed). DOI: 10.1063/1.1310170, which has been published in final form at http://scitation.aip.org/content/aip/journal/apl/77/11/10.1063/1.1310170.en
dc.rights.holderAIP Publishing
dc.subject.keywordferrimagnetismen
dc.subject.keywordmagnetoresistanceen
dc.subject.keywordCurie pointen
dc.subject.otherChemistryen
dc.subject.otherPhysicsen
dc.titleMagnetoresistance effect in the fluctuating-valence BaSmFe[sub 2]O[sub 5+w] systemen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen

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