Ferromagnetism in single crystal and nanocomposite Sr(Ti,Fe)O-3 epitaxial films

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dc.contributor.authorKim, Hyun-Sukko
dc.contributor.authorBi, Leiko
dc.contributor.authorKim, Dong-Hunko
dc.contributor.authorYang, Dae-Jinko
dc.contributor.authorChoi, Yoon-Jeongko
dc.contributor.authorLee, Jung-Wooko
dc.contributor.authorKang, Jeung-Kuko
dc.contributor.authorPark, Yun-Changko
dc.contributor.authorDionne, Gerald F.ko
dc.contributor.authorRoss, Caroline A.ko
dc.date.accessioned2013-03-12T01:01:15Z-
dc.date.available2013-03-12T01:01:15Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2011-07-
dc.identifier.citationJOURNAL OF MATERIALS CHEMISTRY, v.21, no.28, pp.10364 - 10369-
dc.identifier.issn0959-9428-
dc.identifier.urihttp://hdl.handle.net/10203/100896-
dc.description.abstractThe ferromagnetic properties and electrical leakage current of single-phase SrTi1-xFexO3 (STF) perovskite films are compared for two different samples: a single-crystal film with a (100) orientation, and a `doubly oriented' nanocomposite film consisting of (110)-oriented nanopillars embedded homoepitaxially in a (100)-oriented matrix. The STF films contain mixed valence Fe ions, with a lower average valence state present in the single crystal film. The films are under an in-plane compressive strain, and exhibit an out-of-plane magnetic easy axis due to magnetoelastic effects. The nanopillars in the double-epitaxial STF films act as single ferromagnetic domains, whereas the single-crystal films show a maze-like domain structure. Composition fluctuations seen in single-crystal films are suppressed in the double-epitaxial structure, which has a lower electrical leakage current. First-principles modeling supports a tendency for Fe ions to occupy adjacent sites. The correlations between the valence state and distribution of the Fe ions, the microstructure, and the magnetic and electrical properties provide a general method of tailoring the properties of perovskite films, which have immense technological value in a range of multiferroic, ferromagnetic, optical, spintronic and hybrid devices.-
dc.languageEnglish-
dc.publisherROYAL SOC CHEMISTRY-
dc.subjectPULSED-LASER DEPOSITION-
dc.subjectSRTIO3 THIN-FILM-
dc.subjectGROWTH-
dc.subjectNANOSTRUCTURES-
dc.subjectSTABILITY-
dc.subjectORIGIN-
dc.subject00H-
dc.subject0HH-
dc.titleFerromagnetism in single crystal and nanocomposite Sr(Ti,Fe)O-3 epitaxial films-
dc.typeArticle-
dc.identifier.wosid000292982800023-
dc.identifier.scopusid2-s2.0-79960179969-
dc.type.rimsART-
dc.citation.volume21-
dc.citation.issue28-
dc.citation.beginningpage10364-
dc.citation.endingpage10369-
dc.citation.publicationnameJOURNAL OF MATERIALS CHEMISTRY-
dc.contributor.localauthorKang, Jeung-Ku-
dc.contributor.nonIdAuthorKim, Hyun-Suk-
dc.contributor.nonIdAuthorBi, Lei-
dc.contributor.nonIdAuthorKim, Dong-Hun-
dc.contributor.nonIdAuthorYang, Dae-Jin-
dc.contributor.nonIdAuthorChoi, Yoon-Jeong-
dc.contributor.nonIdAuthorPark, Yun-Chang-
dc.contributor.nonIdAuthorDionne, Gerald F.-
dc.contributor.nonIdAuthorRoss, Caroline A.-
dc.type.journalArticleArticle-
dc.subject.keywordPlusPULSED-LASER DEPOSITION-
dc.subject.keywordPlusSRTIO3 THIN-FILM-
dc.subject.keywordPlusGROWTH-
dc.subject.keywordPlusNANOSTRUCTURES-
dc.subject.keywordPlusSTABILITY-
dc.subject.keywordPlusORIGIN-
dc.subject.keywordPlus00H-
dc.subject.keywordPlus0HH-
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