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TitlePr 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.
KeywordsPraseodimium calcium manganite
Laser ablation
Structural properties
Electrical properties
Issue date2013
PublisherEDP Sciences
JournalEPJ Web of Conferences
CitationEPJ 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.
TypeConference paper
AccessOpen access
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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