Characterization of preferred orientated vanadium dioxide film on muscovite (001) substrate

In this paper, a natural muscovite slice is used as the substrate for deposition of the vanadium dioxide films. Vanadium oxide gel films are fabricated on the muscovite (001) cleavage plane by an aqueous sol-gel method, then the films are crystallized and reduced to vanadium dioxide by annealing in static N-2 atmosphere at a temperature of 480 degrees C. The X-ray patterns of the reduced films exhibit the unique diffraction peak of the monoclinic VO2(001) plane. The result indicates that the films are perfectly (011) orientated on muscovite (001) plane. The optic and electrical properties of the films are investigated below and above the metal-to-isolated phase-transition temperature. The thermochromic VO2 films on muscovite exhibit changes in electrical resistivity more than switches more than 60% in the wave number range of 4000-2000 cm(-1). (c) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim