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Article: Phase separation induced by cation disorder in (La, Y) 2/3(Sr, Ca) 1/3MnO3

TitlePhase separation induced by cation disorder in (La, Y) 2/3(Sr, Ca) 1/3MnO3
Authors
KeywordsCation disorder
Colossal magnetoresistance
Phase separation
Issue Date2011
PublisherWorld Scientific Publishing Co Pte Ltd. The Journal's web site is located at http://www.worldscinet.com/ijmpb/ijmpb.shtml
Citation
International Journal of Modern Physics B: condensed matter physics; statistical physics; applied physics, 2011, v. 25 n. 11, p. 1501-1509 How to Cite?
AbstractPolycrystalline manganite oxides with different A-site cation disorder were synthesized. The hole concentration and average radius of A-site cation are kept unchanged while the A-site cation disorder increases linearly by Y and Sr co-doped in La2/3Ca1/3 MnO3. All these samples exhibit a paramagnetic insulator to ferromagnetic (FM) metal transition, and the transition temperature TC and TMI decrease while the transition width increases with increasing the A-site cation disorder. TMI is usually 10 K higher than TC for the small cation disorder samples. However, with increasing the cation disorder, TMI is about 60 K lower than TC, and the resistivity increases in magnitude while the magnetization decreases. The metal-to-insulator transition for samples with small cation disorder can be well described by a percolative model, which indicates FM-metal state and antiferromagnetic insulator state assuredly coexist in the transition interval. It reveals that cation disorder suppresses the long-range FM-metal state which results in the phase separation behavior in samples with large cation disorder.
Persistent Identifierhttp://hdl.handle.net/10722/142481
ISSN
2015 Impact Factor: 0.85
2015 SCImago Journal Rankings: 0.338
ISI Accession Number ID
Funding AgencyGrant Number
Jiangsu Postdoctoral Science Foundation0902070C
Fundamental Research Funds for the Central Universities2009B26614
2010B29014
Funding Information:

This work has been supported by the Jiangsu Postdoctoral Science Foundation (No. 0902070C) and the Fundamental Research Funds for the Central Universities (Nos. 2009B26614 and 2010B29014).

 

DC FieldValueLanguage
dc.contributor.authorZhang, AMen_US
dc.contributor.authorCai, HLen_US
dc.contributor.authorWu, XSen_US
dc.contributor.authorWang, ZHen_US
dc.contributor.authorGao, Jen_US
dc.date.accessioned2011-10-28T02:46:53Z-
dc.date.available2011-10-28T02:46:53Z-
dc.date.issued2011en_US
dc.identifier.citationInternational Journal of Modern Physics B: condensed matter physics; statistical physics; applied physics, 2011, v. 25 n. 11, p. 1501-1509en_US
dc.identifier.issn0217-9792-
dc.identifier.urihttp://hdl.handle.net/10722/142481-
dc.description.abstractPolycrystalline manganite oxides with different A-site cation disorder were synthesized. The hole concentration and average radius of A-site cation are kept unchanged while the A-site cation disorder increases linearly by Y and Sr co-doped in La2/3Ca1/3 MnO3. All these samples exhibit a paramagnetic insulator to ferromagnetic (FM) metal transition, and the transition temperature TC and TMI decrease while the transition width increases with increasing the A-site cation disorder. TMI is usually 10 K higher than TC for the small cation disorder samples. However, with increasing the cation disorder, TMI is about 60 K lower than TC, and the resistivity increases in magnitude while the magnetization decreases. The metal-to-insulator transition for samples with small cation disorder can be well described by a percolative model, which indicates FM-metal state and antiferromagnetic insulator state assuredly coexist in the transition interval. It reveals that cation disorder suppresses the long-range FM-metal state which results in the phase separation behavior in samples with large cation disorder.-
dc.languageengen_US
dc.publisherWorld Scientific Publishing Co Pte Ltd. The Journal's web site is located at http://www.worldscinet.com/ijmpb/ijmpb.shtmlen_US
dc.relation.ispartofInternational Journal of Modern Physics B: condensed matter physics; statistical physics; applied physicsen_US
dc.rightsInternational Journal of Modern Physics B: condensed matter physics; statistical physics; applied physics. Copyright © World Scientific Publishing Co Pte Ltd.-
dc.subjectCation disorder-
dc.subjectColossal magnetoresistance-
dc.subjectPhase separation-
dc.titlePhase separation induced by cation disorder in (La, Y) 2/3(Sr, Ca) 1/3MnO3en_US
dc.typeArticleen_US
dc.identifier.emailGao, J: jugao@hku.hken_US
dc.identifier.authorityGao, J=rp00699en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1142/S0217979211100576-
dc.identifier.scopuseid_2-s2.0-79957474942-
dc.identifier.hkuros196815en_US
dc.identifier.volume25en_US
dc.identifier.issue11-
dc.identifier.spage1501en_US
dc.identifier.epage1509en_US
dc.identifier.isiWOS:000291040500006-
dc.publisher.placeSingapore-

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