In Situ Grazing Incidence X-Ray Diffraction Study of Electrochemically Deposited Pb Monolayer on Ag(111),

Abstract

We report here the first in-situ X-ray diffraction measurements from a monolayer adsorbed at a metal-liquid interface. Diffraction peaks were observed from a monolayer of lead electrochemically deposited onto a silver (111) surface immersed in aqueous electrolyte. Grazing incidence geometry was used. The lead was found to order into a closed packed hexagonal structure, compressed 1.2% from bulk lead. The first order diffraction peak was 0.037 A(1) broad in the radial and azimuthal directions, indicating that even in an aqueous environment the Pb monolayer forms a well ordered two dimensional solid. A rotational epitaxy angle (angle between the Pb and Ag surface lattices) of 4.4 was observed. Keywords: X ray; Electrode; Interface; Structure.

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Document Details

Document Type
Technical Report
Publication Date
May 12, 1987
Accession Number
ADA181063

Entities

People

  • Gary L. Borges
  • Lesser Blum
  • Mahesh G. Samant
  • Michael F. Toney
  • Owen R. Melroy

Organizations

  • University of Puerto Rico

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cells
  • Diffraction
  • Electrochemical Cells
  • Electrochemistry
  • Electrodes
  • Geometry
  • Materials
  • Measurement
  • Military Research
  • Monomolecular Films
  • Physical Properties
  • Puerto Rico
  • Scattering
  • Two Dimensional
  • United States
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Electrochemical Surface Science
  • Materials Science and Engineering.
  • Thin Film Deposition Science.