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Article: Symmetry analysis of the magnetic structures of bilayered manganites La 2-2xSr 1+2xMn 2O 7 near x = 0.3: Phase separations and percolation

TitleSymmetry analysis of the magnetic structures of bilayered manganites La 2-2xSr 1+2xMn 2O 7 near x = 0.3: Phase separations and percolation
Authors
KeywordsPhysics
Issue Date2000
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2000, v. 62 n. 9, p. 5297-5300 How to Cite?
AbstractWe analyze the symmetry of the magnetic structures of tetragonal bilayered manganites La 2-2xSr 1+2xMn 2O 7 with doping near x=0.3 and formulate a corresponding Landau theory of the phase transitions involved. It is shown that a phase with a single magnetic order cannot be canting though with a mixture of different magnetic orders can, as is possibly the case near x=0.4. Accordingly, a schematic magnetic phase diagram near x=0.3 is constructed which may consistently account for the controversial experimental observations. Possible phase separations and a percolation mechanism of the colossal magnetoresistance are discussed.
Persistent Identifierhttp://hdl.handle.net/10722/43302
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhong, Fen_HK
dc.contributor.authorWang, ZDen_HK
dc.date.accessioned2007-03-23T04:43:11Z-
dc.date.available2007-03-23T04:43:11Z-
dc.date.issued2000en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2000, v. 62 n. 9, p. 5297-5300en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43302-
dc.description.abstractWe analyze the symmetry of the magnetic structures of tetragonal bilayered manganites La 2-2xSr 1+2xMn 2O 7 with doping near x=0.3 and formulate a corresponding Landau theory of the phase transitions involved. It is shown that a phase with a single magnetic order cannot be canting though with a mixture of different magnetic orders can, as is possibly the case near x=0.4. Accordingly, a schematic magnetic phase diagram near x=0.3 is constructed which may consistently account for the controversial experimental observations. Possible phase separations and a percolation mechanism of the colossal magnetoresistance are discussed.en_HK
dc.format.extent102662 bytes-
dc.format.extent45056 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleSymmetry analysis of the magnetic structures of bilayered manganites La 2-2xSr 1+2xMn 2O 7 near x = 0.3: Phase separations and percolationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=62&issue=9&spage=5297&epage=5300&date=2000&atitle=Symmetry+analysis+of+the+magnetic+structures+of+bilayered+manganites+La2-2xSr1+2xMn2O7+near+x=0.3:+Phase+separations+and+percolationen_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.62.5297en_HK
dc.identifier.scopuseid_2-s2.0-0034261283en_HK
dc.identifier.hkuros55914-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034261283&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume62en_HK
dc.identifier.issue9en_HK
dc.identifier.spage5297en_HK
dc.identifier.epage5300en_HK
dc.identifier.isiWOS:000089212900009-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhong, F=7102244612en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK

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