Coexistence of intrinsic and extrinsic magnetoresistance in the double-perovskite Sr[sub 2]Fe(Mo[sub 1-x]W[sub x])O[sub 6-w] system

 |  Login

Show simple item record

dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Lindén, J.
dc.contributor.author Yamamoto, T.
dc.contributor.author Nakamura, J.
dc.contributor.author Karppinen, Maarit
dc.contributor.author Yamauchi, H.
dc.date.accessioned 2015-10-08T09:02:26Z
dc.date.available 2015-10-08T09:02:26Z
dc.date.issued 2001
dc.identifier.citation Lindén, J. & Yamamoto, T. & Nakamura, J. & Karppinen, Maarit & Yamauchi, H.. 2001. Coexistence of intrinsic and extrinsic magnetoresistance in the double-perovskite Sr[sub 2]Fe(Mo[sub 1-x]W[sub x])O[sub 6-w] system. Applied Physics Letters. Volume 78, Issue 18. 2736-2738. ISSN 0003-6951 (printed). DOI: 10.1063/1.1366357. en
dc.identifier.issn 0003-6951 (printed)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/18005
dc.description.abstract In a recent study, it was shown that by partially substituting Mo with W in the double-perovskite Sr2FeMoO6−w system, the magnetoresistivity can be enhanced. [K.-I. Kobayashi, T. Okuda, Y. Tomioka, T. Kimura, and Y. Tokura, J. Magn. Magn. Mater. 218, 17 (2000).] In order to explain the increase in the magnetoresistivity a series of W-substituted Sr2Fe(Mo1−xWx)O6−w samples with 0⩽x⩽1 was synthesized. Upon increasing the W content, the samples began to exhibit coexistence of paramagnetism and ferrimagnetism at 300 K. Signatures of antiferromagnetic ordering appeared around TN≈50 K for x⩾0.6. In samples with 0.7⩽x⩽0.8 a broad peak was observed in the magnetoresistance data at temperatures corresponding to the Néel temperature. The peak was found to have its origin in the colossal magnetoresistanceeffect. The W-substituted samples were partially ferrimagnetic and therefore also exhibited the tunneling-type magnetoresistance, which is characteristic of pure Sr2FeMoO6−w. The coexistence of the two types of magnetoresistanceeffect is responsible for the enhancement of the overall magnetoresistance value. A slight enhancement in the magnetoresistance values around 300 K for the strongly W-substituted samples was found to be related to a second colossal magnetoresistance peak related to the para- to ferrimagnetic transition at Tc. en
dc.format.extent 2736-2738
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher AIP Publishing en
dc.relation.ispartofseries Applied Physics Letters en
dc.relation.ispartofseries Volume 78, Issue 18
dc.rights © 2001 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the authors and the American Institute of Physics. The following article appeared in Applied Physics Letters. Volume 78, Issue 18 and may be found at http://scitation.aip.org/content/aip/journal/apl/78/18/10.1063/1.1366357. en
dc.subject.other Chemistry en
dc.subject.other Physics en
dc.title Coexistence of intrinsic and extrinsic magnetoresistance in the double-perovskite Sr[sub 2]Fe(Mo[sub 1-x]W[sub x])O[sub 6-w] system en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder AIP Publishing
dc.contributor.school Kemian tekniikan korkeakoulu fi
dc.contributor.school School of Chemical Technology en
dc.contributor.department Kemian laitos fi
dc.contributor.department Department of Chemistry en
dc.subject.keyword ferrimagnetism en
dc.subject.keyword magnetoresistance en
dc.subject.keyword molybdenum en
dc.subject.keyword perovskites en
dc.identifier.urn URN:NBN:fi:aalto-201510084569
dc.type.dcmitype text en
dc.identifier.doi 10.1063/1.1366357
dc.type.version Final published version en


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search archive


Advanced Search

article-iconSubmit a publication

Browse

My Account