Phase Transitions in the Chemisorbed Layer W(110)p(2x1)-O as a Function of Coverage: I. Experimental.

Abstract

The thermal disordering of oxygen chemisorbed on W(110) has been investigated as a function of coverage below half monolayer coverage by measuring the angular distribution of intensity in the LEED superlattice reflections as a function of temperature. The transition temperature is a function of coverage, being much lower at low coverage. A partial phase diagram is constructed for this overlayer, and the low- and high-coverage limits are interpreted respectively in terms of an island-dissolution and an order-disorder transition. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 27, 1977
Accession Number
ADA053454

Entities

People

  • G.-c. Wang
  • M. G. Lagally
  • T.-m. Lu

Organizations

  • University of Wisconsin–Madison

Tags

DTIC Thesaurus Topics

  • Crystals
  • Diagrams
  • Diffraction
  • Electron Diffraction
  • Geometry
  • Heat Energy
  • Materials
  • Materials Science
  • Measurement
  • Phase Diagrams
  • Phase Transformations
  • Scattering
  • Solid State Physics
  • Thermodynamics
  • Transition Temperature
  • Transitions
  • Two Dimensional

Readers

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