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dc.date.accessioned2018-01-05T15:06:24Z
dc.date.available2018-01-05T15:06:24Z
dc.date.created2005-03-15T11:26:50Z
dc.date.issued2004
dc.identifier.citationNakamura, J Karppinen, M Karen, Pavel Linden, J Yamauchi, H . Isovalent-substitution effect on the Verwey-type transition in the A-site-ordered double perovskite (Ba,Sr)RFe2O5. Physical Review B. Condensed Matter and Materials Physics. 2004, 70
dc.identifier.urihttp://hdl.handle.net/10852/59522
dc.description.abstractTwo types of chemical-pressure effects on the Verwey-type transition in Ba Sm Fe 2 O 5 are studied, viz., ionic-size contractions at the Ba and Sm sites. Whereas the replacement of Sm by the smaller Eu and Gd atoms increases the transition temperature TV from 232 K to 264 K , the Sr-for-Ba substitution decreases it from 232 K to 180 K for x=0.15 in (Ba 1 − x Sr x ) Sm Fe 2 O 5 . Of various structural parameters determined by synchrotron x-ray diffraction above TV, the magnitude of the orthorhombic distortion (=b− a ) is found to correlate with TV in a manner that unifies both substitution schemes. It is suggested that when an increase in b− a above TV is achieved by means of the structural substitution, it makes it easier for the dxz Fe 2 + orbital ordering to occur below TV. © 2004 American Physical Societyen_US
dc.languageEN
dc.publisherAmerican Physical Society
dc.titleIsovalent-substitution effect on the Verwey-type transition in the A-site-ordered double perovskite (Ba,Sr)RFe2O5en_US
dc.typeJournal articleen_US
dc.creator.authorNakamura, J
dc.creator.authorKarppinen, M
dc.creator.authorKaren, Pavel
dc.creator.authorLinden, J
dc.creator.authorYamauchi, H
cristin.unitcode185,15,12,0
cristin.unitnameKjemisk institutt
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.cristin419043
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical Review B. Condensed Matter and Materials Physics&rft.volume=70&rft.spage=&rft.date=2004
dc.identifier.jtitlePhysical Review B. Condensed Matter and Materials Physics
dc.identifier.volume70
dc.identifier.pagecount6
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.70.144104
dc.identifier.urnURN:NBN:no-62202
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn1098-0121
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/59522/1/2004%2BNakamuraPRB.pdf
dc.type.versionPublishedVersion


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