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Article: Strain-mediated electric-field control of photoinduced demagnetization in La0.8 Ca0.2 MnO3 thin films

TitleStrain-mediated electric-field control of photoinduced demagnetization in La0.8 Ca0.2 MnO3 thin films
Authors
KeywordsConverse piezoelectric effects
Electric-field control
Epitaxially grown
Ferroelectric polarization
In-situ
Issue Date2011
PublisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/
Citation
Applied Physics Letters, 2011, v. 98 n. 8, article no. 081903 How to Cite?
AbstractLa0.8 Ca0.2 MnO3 (LCMO) thin films have been epitaxially grown on ferroelectric 0.67Pb (Mg1/3 Nb 2/3) O3-0.33 PbTiO3 (PMN-PT) substrates. The substrate-induced strain effects on the transport and photoinduced demagnetization in LCMO films were investigated. The photoinduced resistances (PRs) of LCMO systematically changed versus temperature before and after ferroelectric-poling on PMN-PT, indicating that photoexcited extra carriers in LCMO may suppress the neighboring spin correlation due to the photoassisted hopping of anti-Jahn-Teller polarons. Moreover, a significant modulation on PR by electric fields applied across PMN-PT was observed. In situ x-ray diffraction indicates that the observed variations result from substrate-induced strain due to the ferroelectric polarization or converse piezoelectric effect. © 2011 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/139643
ISSN
2015 Impact Factor: 3.142
2015 SCImago Journal Rankings: 1.105
ISI Accession Number ID
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU702409P
URC of University of Hong Kong
Funding Information:

This work has been supported by the Research Grant Council of Hong Kong (Project No. HKU702409P) and the URC of University of Hong Kong.

 

DC FieldValueLanguage
dc.contributor.authorGuo, EJen_US
dc.contributor.authorGao, Jen_US
dc.contributor.authorLu, HBen_US
dc.date.accessioned2011-09-23T05:52:51Z-
dc.date.available2011-09-23T05:52:51Z-
dc.date.issued2011en_US
dc.identifier.citationApplied Physics Letters, 2011, v. 98 n. 8, article no. 081903en_US
dc.identifier.issn0003-6951-
dc.identifier.urihttp://hdl.handle.net/10722/139643-
dc.description.abstractLa0.8 Ca0.2 MnO3 (LCMO) thin films have been epitaxially grown on ferroelectric 0.67Pb (Mg1/3 Nb 2/3) O3-0.33 PbTiO3 (PMN-PT) substrates. The substrate-induced strain effects on the transport and photoinduced demagnetization in LCMO films were investigated. The photoinduced resistances (PRs) of LCMO systematically changed versus temperature before and after ferroelectric-poling on PMN-PT, indicating that photoexcited extra carriers in LCMO may suppress the neighboring spin correlation due to the photoassisted hopping of anti-Jahn-Teller polarons. Moreover, a significant modulation on PR by electric fields applied across PMN-PT was observed. In situ x-ray diffraction indicates that the observed variations result from substrate-induced strain due to the ferroelectric polarization or converse piezoelectric effect. © 2011 American Institute of Physics.-
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/en_US
dc.relation.ispartofApplied Physics Lettersen_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsApplied Physics Letters. Copyright © American Institute of Physics.en_US
dc.rightsAfter publication: Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (Applied Physics Letters, 2011, v. 98 n. 8, article no. 081903) and may be found at (http://apl.aip.org/resource/1/applab/v98/i8/p081903_s1).en_US
dc.subjectConverse piezoelectric effects-
dc.subjectElectric-field control-
dc.subjectEpitaxially grown-
dc.subjectFerroelectric polarization-
dc.subjectIn-situ-
dc.titleStrain-mediated electric-field control of photoinduced demagnetization in La0.8 Ca0.2 MnO3 thin filmsen_US
dc.typeArticleen_US
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-6951&volume=98&issue=8, article no. 081903&spage=&epage=&date=2011&atitle=Strain-mediated+electric-field+control+of+photoinduced+demagnetization+in+La0.8+Ca0.2+MnO3+thin+films-
dc.identifier.emailGuo, EJ: ejguo@hku.hken_US
dc.identifier.emailGao, J: jugao@hku.hken_US
dc.identifier.authorityGao, J=rp00699en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/1.3556613-
dc.identifier.scopuseid_2-s2.0-79952082122-
dc.identifier.hkuros195576en_US
dc.identifier.volume98en_US
dc.identifier.issue8, article no. 081903-
dc.identifier.eissn1077-3118-
dc.identifier.isiWOS:000287764300021-

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