We report on the preparation and characterization of epitaxial thin films of the double-perovskite by pulsed laser deposition. On substrates with low lattice mismatch like epitaxial 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 substrate surface undergoes an insulator–metal transition impeding the separation of thin film and substrate electric transport properties.
Epitaxial growth and transport properties of thin films
J. B. Philipp, D. Reisinger, M. Schonecke, M. Opel, A. Marx, A. Erb, L. Alff, R. Gross; Epitaxial growth and transport properties of thin films. J. Appl. Phys. 15 May 2003; 93 (10): 6853–6855. https://doi.org/10.1063/1.1556124
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