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|Title:||Pr 0.5 Ca 0.5 MnO 3 thin films deposited on LiNbO 3 substrates|
|Author(s):||Gomes, I. Tarroso|
Almeida, B. G.
Araújo, J. P.
|Keywords:||Praseodimium calcium manganite|
|Journal:||EPJ Web of Conferences|
|Citation:||EPJ Web of Conferences 40, 15010 (2013)|
|Abstract(s):||Thin films of Pr 0.5 Ca 0.5 MnO 3 have been deposited on z-cut LiNbO 3 by pulsed laser ablation. The X-ray diffraction measurements showed that the films have grown highly oriented on LiNbO 3 , 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 (T_CO) was estimated from ln(r) vs. (1/T) plots. The charge ordering temperature was found to be dependent on the strain induced by the lattice mismatch on the films.|
|Appears in Collections:||CDF - FCD - Artigos/Papers (with refereeing)|
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