Electrodeposited Ceramic Superlattices
Ceramic superlattices have been produced by electrodeposition with modulation wavelengths in the range from 5 to 10 nanometers. The Tl aPb bO e/Tl dPb eO f superlattices were deposited from a single aqueous solution at room temperature, and the layer thicknesses were galvanostatically controlled. The films showed strong preferred orientation and distinct first-order satellites around the Bragg reflections in the x-ray diffraction pattern. The modulation wavelengths calculated from the satellite spacings were in agreement with those calculated from Faraday's law. Because the modulation wavelengths are of electron mean free path dimensions, this class of degenerate semiconductor metal-oxide superlattices may exhibit thickness-dependent quantum optical, electronic, or optoelectronic effects.
J. A. Switzer et al., "Electrodeposited Ceramic Superlattices," Science, American Association for the Advancement of Science (AAAS), Jan 1990.
The definitive version is available at http://dx.doi.org/10.1126/science.284.5412.293
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© 1990 American Association for the Advancement of Science (AAAS), All rights reserved.