Accession Number:

ADA053454

Title:

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

Descriptive Note:

Technical rept.,

Corporate Author:

WISCONSIN UNIV-MADISON MATERIALS SCIENCE CENTER

Personal Author(s):

Report Date:

1977-12-27

Pagination or Media Count:

44.0

Abstract:

The thermal disordering of oxygen chemisorbed on W110 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

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE