(100)-oriented, perovskite-type LaNiO3 thin films were prepared on SiO2 glass substrates by the sol-gel method. Effects of thermal processing on the orientation, surface morphology, and electrical properties of the films were investigated. The nearly complete (100)-orientation was achieved by drying the films at temperatures above 350°C before a final heat treatment at 700°C. It was the key to heat the substrate from the other side to obtain the oriented films. A possible mechanism of the orientation is proposed on the basis of surface energies of the films and the substrates and the interracial energy between them.
|Journal of the American Ceramic Society
|Published - 2002 4月
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