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A calculation of the diffusion energies for adatoms on surfaces of F.C.C. metalsThe activation energies for diffusion were determined for gold, platinum and iridium adatoms on plane and plane PT surfaces and were found to be in good agreement with the measurements reported by Bassett and Webber. The Lennard-Jones pair potentials were used to model the interatomic forces, and relaxation of the substrate atoms in near proximity to the adatom was considered in detail. The present calculations clarify the mechanism of the observed two-dimensional diffusion of platinum and iridium atoms on a plane PT surface. The results are compared with those obtained using Morse potential functions and different relaxation techniques.
Document ID
19800029364
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Halicioglu, T.
(NASAStanford Joint Institute for Surface and Microstructural Research Moffett Field, Calif., United States)
Pound, G. M.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Subject Category
Inorganic And Physical Chemistry
Accession Number
80A13534
Funding Number(s)
CONTRACT_GRANT: NATO-858
Distribution Limits
Public
Copyright
Other

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