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Type: Artigo de evento
Title: Local Effects In Strained Manganite Thin Films
Author: Souza-Neto N.M.
Ramos A.Y.
Tolentino H.C.N.
Favre-Nicolin E.
Ranno L.
Abstract: We report on polarized X-ray absorption spectroscopy (P-XAS) study of La0.7Sr0.3MnO3 (LSMO) films, epitaxially grown by laser ablation on tensile (SrTiO3) and compressive (LaAlO 3) substrates. In-plane and out-of-plane bond information was obtained by setting the angle between electric field vector and film surface close to 0 and 90°, respectively. Measurements show significant modifications in the average MnO6 octahedron around manganese atoms in the film plane for tensile and compressive substrates. The modifications of the XANES spectra were correlated to a modification in the average Mn-O distance and a distortion of the MnO6 octahedra. Ab initio calculations using the full multiple scattering approach confirm the structural model of distorted octahedron. © 2003 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.jallcom.2003.09.085
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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