An In-Situ Grazing Incidence X-Ray Scattering Study of the Initial Stages of Electrochemical Growth of Lead on Silver (3)

Abstract

The potential dependent structure of under-potentially deposited lead on silver (III) and the initial stages of bulk lead deposition on the ad-layer have been studied using grazing incidence x-ray scattering. Measurements were made in-situ and under potential control. The closed packed triangular lattice of lead formed by the underpotential deposition (at full monolayer coverage) is compressed 1.4% relative to bulk lead. This compressive strain increases linearly with applied potential until the onset of bulk deposition where the ad- layer is compressed 2.8%. Bulk lead is not deposited epitaxially on this template because of the large compressive strain. Instead, it grows as islands that have (III) texture but are randomly oriented in the plane of the substrate. After the deposition of approximately five equivalent monolayers of bulk lead, the initial ad-layer appears to reconstruct.

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Document Details

Document Type
Technical Report
Publication Date
Nov 05, 1988
Accession Number
ADA203385

Entities

People

  • G. L. Borges
  • J. B. Kortright
  • M. F. Toney
  • M. G. Samant
  • O. R. Melroy

Organizations

  • University of Puerto Rico

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Contracts
  • Diffraction
  • Electrodeposition
  • Films
  • Materials
  • Materials Science
  • Measurement
  • Military Research
  • Physics
  • Puerto Rico
  • Scattering
  • United States
  • Universities
  • X Ray Scattering
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Electrochemical Surface Science
  • Image Processing and Computer Vision.
  • Thin Film Deposition Science.