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|Type:||Artigo de evento|
|Title:||Local Effects In Strained Manganite Thin Films|
|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.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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