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http://hdl.handle.net/2445/32768| Title: | Effects of thickness on the cation segregation in epitaxial (001) and (110) La2/3Ca1/3MnO3 thin films |
| Author: | Estradé Albiol, Sònia Rebled, J. M. (José Manuel) Arbiol i Cobos, Jordi Peiró Martínez, Francisca Infante, I. C. Herranz Casabona, Gervasi Sánchez, F. Fontcuberta i Griñó, Josep Córdoba, R. Mendis, B. G. Bleloch, A. L. |
| Keywords: | Cations Pel·lícules fines Espintrònica Espectroscòpia de pèrdua d'energia d'electrons Cations Thin films Spintronics Electron energy loss spectroscopy |
| Issue Date: | 2009 |
| Publisher: | American Institute of Physics |
| Abstract: | Electron-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. |
| Note: | Reproducció del document publicat a: http://dx.doi.org/10.1063/1.3211130 |
| It is part of: | Applied Physics Letters, 2009, vol. 95, p. 072507-1-072507-3 |
| URI: | http://hdl.handle.net/2445/32768 |
| Related resource: | http://dx.doi.org/10.1063/1.3211130 |
| ISSN: | 0003-6951 |
| Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
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