MIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Structural, chemical, and electronic state on La[subscript 0.7]Sr[subscript 0.3]MnO[subscript 3] dense thin-film surfaces at high temperature - Surface segregation

Author(s)
Jalili, Helia; Yildez, Bilge; Chen, Yan, 1976-
Thumbnail
DownloadYildiz_Structural Chemical.pdf (224.5Kb)
PUBLISHER_POLICY

Publisher Policy

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.

Alternative title
Structural, chemical, and electronic state on La0.7Sr 0.3MnO3 dense thin-film surfaces at high temperature - Surface segregation
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Metadata
Show full item record
Abstract
The evolution of the surface topographic and electronic structure and chemical state of the La0.7Sr0.3MnO3 (LSMO) thin films were probed using Scanning Tunneling microscopy and X-ray photoelectron spectroscopy to identify the structural nature of surface segregation of Sr on LSMO. The films had a layer-by-layer structure with a step height of 3.9 Å, close to the lattice parameter of LSMO. Up to 500oC in oxygen, the topography and the step heights remained the same, statistically within 2-4%, implying that no phase separation took place on the top layers. The low oxygen pressures, down to 10E-10 mbar at 500-580oC promoted segregation of Sr by 12-20% on the A-site. Our results suggests two possible structures for Sr segregation; the replacement of La by Sr on the AO-surface of the LSMO which retains a perovskite termination, or a separate AO-oxide phase nucleating on the defected lower layers.
Date issued
2010-04
URI
http://hdl.handle.net/1721.1/65852
Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Journal
ECS Transactions
Publisher
Electrochemical Society
Citation
Jalili, Helia, Yan Chen, and Bilge Yildiz. “Structural, Chemical, and Electronic State on La0.7Sr0.3MnO3 Dense Thin-Film Surfaces at High Temperature: Surface Segregation.” ECS Transactions, 28 (11) 235-240 (2010) ©2010 ECS - The Electrochemical Society.
Version: Final published version
ISSN
1938-5862
1938-6737

Collections
  • MIT Open Access Articles

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries
PrivacyPermissionsAccessibilityContact us
MIT
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.