Estradé Albiol, SòniaRebled, J. M. (José Manuel)Arbiol i Cobos, JordiPeiró Martínez, FranciscaInfante, I. C.Herranz Casabona, GervasiSánchez, F.Fontcuberta i Griñó, JosepCórdoba, R.Mendis, B. G.Bleloch, A. L.2012-11-202012-11-2020090003-6951https://hdl.handle.net/2445/32768Electron-energy-loss spectroscopy is used to map composition and electronic states in epitaxial La2/3Ca1/3MnO3 LCMO films of various thicknesses grown on SrTiO3 001 and 110 substrates. For relatively thick films 20 nm , epitaxial tensile strain in 001 films promotes a compositional La/Ca gradient across the film thickness, being the interface La rich, while the relaxed 110 films are chemically homogeneous. In contrast, much thinner 001 and 110 LCMO films display a different La/Ca distribution, being La rich at the free surface. The observed distinct thickness-dependent composition gradient behavior reflects a balance between strain-induced elastic energy minimization and kinetic effects during growth.3 p.application/pdfeng(c) American Institute of Physics , 2009CationsPel·lícules finesEspintrònicaEspectroscòpia de pèrdua d'energia d'electronsCationsThin filmsSpintronicsElectron energy loss spectroscopyinfo:eu-repo/semantics/article5712102012-11-20info:eu-repo/semantics/openAccess