Title

Epitaxial Electrodeposition of Orthorhombic Α-PbO 2 on (100)-Oriented Single Crystal Au

Abstract

Epitaxial films of orthorhomhic lead dioxide α-PbO 2 (Pbcn, a = 0.4971, b = 0.5956, and c = 0.5438 nm) were electrodeposited at room temperature on a [100]-oriented single crystal Au substrate (cubic, Fm3m, a = 0.4079 nm). The values of lattice mismatch are 21.9, 46.0, and 33.3% in the a, b, and c directions of α-PbO 2, respectively. The films are [100]-oriented, with the a axis perpendicular to the substrate. Depending on the preparation conditions, the film was found to form two different in-plane orientations, with the unit cell of the PbO 2 structure rotated either 45 or 11.5° relative to the substrate. For the films deposited at low current density, only the first type of the in-plane texture is observed, while at high current densities both types are present in comparable amounts. © 2001 The Electrochemical Society. All rights reserved.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2001 The Electrochemical Society (ECS), All rights reserved.


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