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Electrodeposition of Nanomodulated Ceramic Thin Films

Published online by Cambridge University Press:  28 February 2011

Jay A. Switzer ,
Michael J. Shane  and
Richard J. Phillips
Jay A. Switzer
Affiliation:
University of Pittsburgh, Department of Materials Science and Engineering, Pittsburgh, PA 15261.
Michael J. Shane
Affiliation:
University of Pittsburgh, Department of Materials Science and Engineering, Pittsburgh, PA 15261.
Richard J. Phillips
Affiliation:
University of Pittsburgh, Department of Materials Science and Engineering, Pittsburgh, PA 15261.
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Abstract

Electrochemistry can be used for the atomic-level architecture of ceramic materials. In this report, ceramic superlattices based on the TlaPbbOc/TldPbeOf system were electrodeposited with individual layer thicknesses as thin as 3nm. The superlattices were deposited from a single aqueous solution at room temperature, and the layer thicknesses were galvanostatically controlled. Substitution of Tl2O3 into PbO2 appears to stabilize a face-centered cubic structure with an average lattice parameter of 0.536nm. The lattice parameters for the T1aPbbOc. mixed oxides vary by less than 0.3% when the Pb/Tl ratio is varied from 0.84 to 7.3. Because the modulation wavelengths are of electron mean free path dimensions, this new class of degenerate semiconductor metal-oxide superlattices may show thickness-dependent quantum optical, electronic, or optoelectronic effects.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 180: Symposium A – Better Ceramics Through Chemistry IV , 1990 , 1053
Copyright
Copyright © Materials Research Society 1990

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References

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