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Title:Adatom Diffusion and Interactions: Pd on W(110)
Author(s):Koh, Seong Jin
Doctoral Committee Chair(s):Ehrlich, Gert
Department / Program:Materials Science and Engineering
Discipline:Materials Science and Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Materials Science
Abstract:Three-atom interaction energies have been estimated from the observed linear-to-island transformation of Pd clusters and from the measured interaction energies of Pd pairs. In this, three-atom interaction energies corresponding to two different configurations, linear and triangle, have been obtained for the first time. It has been found that the magnitude of the three-atom interaction energy for the linear configuration, F$\sb{\rm 3,lin}$, is large. The large three-atom interaction energy of the linear configuration is responsible for the observed stability of linear chain structures of small Pd clusters and for the linear-to-island transformation when the size of the cluster increases. This study has shown that many-atom interactions play a crucial role in the cohesion and structure of nuclei in the early stages of crystal growth and hence significantly influence the entire growth process.
Issue Date:1998
Description:253 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998.
Other Identifier(s):(MiAaPQ)AAI9834700
Date Available in IDEALS:2015-09-25
Date Deposited:1998

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