DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jalili, Helia | - |
dc.contributor.author | HAN, JEONG WOO | - |
dc.contributor.author | Kuru, Yener | - |
dc.contributor.author | Cai, Zhuhua | - |
dc.contributor.author | Yildiz, Bilge | - |
dc.date.accessioned | 2021-11-20T11:50:31Z | - |
dc.date.available | 2021-11-20T11:50:31Z | - |
dc.date.created | 2021-11-19 | - |
dc.date.issued | 2011-04-07 | - |
dc.identifier.issn | 1948-7185 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/107520 | - |
dc.description.abstract | Effects of strain on the surface cation chemistry and the electronic structure are important to understand and control for attaining fast oxygen reduction kinetics on transition-metal oxides. Here we demonstrate and mechanistically interpret the strain coupling to Sr segregation, oxygen vacancy formation, and electronic structure on the surface of La0.7Sr0.3MnO3 (LSM) thin films as a model system. Our experimental results from X-ray photoelectron spectroscopy and scanning tunneling spectroscopy are discussed in light of our first principles-based simulations. A stronger Sr enrichment tendency and a more facile oxygen vacancy formation prevail for the tensile-strained LSM surface. At 500 degrees C in 10(-3) mbar oxygen, both LSM film surfaces exhibit a metallic-like tunneling conductance, with a higher density of electronic states near the Fermi level on the tensile-strained LSM surface, contrary to the behavior at room temperature. Our findings illustrate the potential role and mechanism of lattice strain in tuning the reactivity of perovskite transition-metal oxides with oxygen in solid oxide fuel cell cathodes. | - |
dc.language | English | - |
dc.publisher | American Chemical Society | - |
dc.relation.isPartOf | Journal of Physical Chemistry Letters | - |
dc.title | New Insights into the Strain Coupling to Surface Chemistry, Electronic Structure, and Reactivity of La0.7Sr0.3MnO3 | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/jz200160b | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Journal of Physical Chemistry Letters, v.2, no.7, pp.801 - 807 | - |
dc.identifier.wosid | 000289341600019 | - |
dc.citation.endPage | 807 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 801 | - |
dc.citation.title | Journal of Physical Chemistry Letters | - |
dc.citation.volume | 2 | - |
dc.contributor.affiliatedAuthor | HAN, JEONG WOO | - |
dc.identifier.scopusid | 2-s2.0-79953797462 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | MECHANISTIC ANALYSIS | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | SEGREGATION | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | PREDICTION | - |
dc.subject.keywordPlus | EXCHANGE | - |
dc.subject.keywordPlus | OXIDES | - |
dc.subject.keywordPlus | STATE | - |
dc.subject.keywordPlus | XPS | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Atomic, Molecular & Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
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