Issue |
EPJ Web of Conferences
Volume 40, 2013
JEMS 2012 – Joint European Magnetic Symposia
|
|
---|---|---|
Article Number | 15010 | |
Number of page(s) | 4 | |
Section | Perovskites and multiferroics | |
DOI | https://doi.org/10.1051/epjconf/20134015010 | |
Published online | 14 January 2013 |
https://doi.org/10.1051/epjconf/20134015010
Pr0.5Ca0.5MnO3 thin films deposited on LiNbO3 substrates
1
Centro de Física, Universidade do Minho, Campus de
Gualtar, 4710-057
Braga,
Portugal
2
IFIMUP/IN-Instituto de Nanociência e
Nanotecnologia, R.
Campo Alegre
4169-007
Porto,
Portugal
3
Universidade do Porto-DFA Faculdade de
Ciências, R. Campo
Alegre, 4169-007
Porto,
Portugal
Thin films of Pr0.5Ca0.5MnO3 have been deposited on z-cut LiNbO3 by pulsed laser ablation. The Xray diffraction measurements showed that the films have grown highly oriented on LiNbO3, with a pseudocubic (111) preferred growth direction. The thicknesses of the films, measured by low angle X-ray reflectivity, are between 13 and 140 nm. Their electrical resistivity present a semiconducting-like behaviour with an anomaly around 240 K, that corresponds to the charge ordering transition. The temperature of the transition (TCO) was estimated from ln ρ vs. (1/T) plots. The charge ordering temperature was found to be dependent on the strain induced by the lattice mismatch on the films.
© Owned by the authors, published by EDP Sciences, 2013
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