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Epitaxial growth and transport properties of Sr₂CrWO₆ thin films

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arxiv cond-mat/0210014 v1 pith:6KIEHBBA submitted 2002-10-01 cond-mat.str-el cond-mat.mtrl-sci

Epitaxial growth and transport properties of Sr₂CrWO₆ thin films

J. B. Philipp , D. Reisinger , M. Schonecke , M. Opel , A. Marx , A. Erb , L. Alff , R. Gross This is my paper
classification cond-mat.str-el cond-mat.mtrl-sci
keywords crwoepitaxialfilmsgrowththinpropertiessrtiosubstrate
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We report on the preparation and characterization of epitaxial thin films of the double-perovskite Sr$_2$CrWO$_6$ by Pulsed Laser Deposition (PLD). On substrates with low lattice mismatch like SrTiO$_3$, epitaxial Sr$_2$CrWO$_6$ films with high crystalline quality can be grown in a molecular layer-by-layer growth mode. Due to the similar ionic radii of Cr and W, these elements show no sublattice order. Nevertheless, the measured Curie temperature is well above 400 K. Due to the reducing growth atmosphere required for double perovskites, the SrTiO$_3$ substrate surface undergoes an insulator-metal transition impeding the separation of thin film and substrate electric transport properties.

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