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Electrodeposition of Nanomodulated Ceramic Thin Films

  • Jay A. Switzer (a1), Michael J. Shane (a1) and Richard J. Phillips (a1)

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.

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Electrodeposition of Nanomodulated Ceramic Thin Films

  • Jay A. Switzer (a1), Michael J. Shane (a1) and Richard J. Phillips (a1)

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