Analysis of the electronic configuration of the pulsed laser deposited La0.7Ca0.3MnO3 thin films

C N Borca, Stela Canulescu, F Loviat, T Lippert, D Grolimund, M Doebeli, J Wambach, A Wokaun

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The electronic properties of La0.7Ca0.3MnO3-delta thin films grown by the pulsed reactive crossed beam laser ablation method are investigated. The effects of post-deposition annealing of epitaxial La0.7Ca0.3MnO3-delta thin films have been investigated using X-ray photoelectron spectroscopy (surface sensitive) and hard X-ray absorption spectroscopy (bulk sensitive). The films deposited in the high vacuum are oxygen deficient and contain mostly Mn3+. High temperature annealing in a flowing oxygen atmosphere partially changes the Mn oxidation state from +3 towards +3.4. These changes should favor a metal-like conduction and a ferromagnetic double exchange transport mechanism in the annealed thin films. (c) 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalApplied Surface Science
Volume254
Issue number4
Pages (from-to)1352-1355
ISSN0169-4332
DOIs
Publication statusPublished - 2007
Externally publishedYes

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