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Title: Cationic Diffusion in La2/3Ca1/3MnO3 Thin Films Grown on LaAlO3 (001) Substrates.
Author: Estradé Albiol, Sònia
Arbiol i Cobos, Jordi
Peiró Martínez, Francisca
Abad, Ll.
Laukhin, Vladimir
Balcells i Argemí, Lluís
Martínez Perea, Benjamin
Keywords: Pel·lícules fines
Propietats magnètiques
Thin films
Magnetic properties
Issue Date: 2007
Publisher: American Institute of Physics
Abstract: Microstructural features of La2/3Ca1/3MnO3 layers of various thicknesses grown on top of 001 LaAlO3 substrates are studied by using transmission electron microscopy and electron energy loss spectroscopy. Films are of high microstructural quality but exhibit some structural relaxation and mosaicity both when increasing thickness or after annealing processes. The existence of a cationic segregation process of La atoms toward free surface has been detected, as well as a Mn oxidation state variation through layer thickness. La diffusion would lead to a Mn valence change and, in turn, to reduced magnetization.
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It is part of: Applied Physics Letters, 2007, vol. 91, p. 252503-1-252503-3
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ISSN: 0003-6951
Appears in Collections:Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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