Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/34022

OpenURL Link
Title
Calculation of the phenomenological coefficients for diffusion by six jump cycles in non-stoichiometric intermetallic compounds
Author/Creator
Belova, I. V.;  Murch, G. E.
Institution
The University of Newcastle. Faculty of Engineering & Built Environement, School of Engineering
Description
In this paper, the six-jump-cycle mechanism, which was conceived as a minimum-energy-penalty sequence of jumps for certain stoichiometric alloys showing antistructural disorder, is extended and employed to calculate the phenomenological coefficients for diffusion at non-stoichiometric compositions for alloys taking the B2 structure. We adopt an analogue of the five-frequency model for impurity diffusion by using antistructural atoms as the 'impurity' and the six-jump cycle as the diffusion mechanism unit. We frame the formalism in the Ising alloy model. We derive asymptotic (T → 0) expressions for the phenomenological coefficients. The results obtained are in excellent agreement with Monte Carlo computer simulations.
Relation
Philosophical Magazine A: Physics of Condensed Matter Structure Defects and Mechanical Properties Vol. 82, Issue 2, p. 285-296
Publisher Link
http://dx.doi.org/10.1080/01418610208239599
Date
2002
Publisher
Taylor & Francis
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/34022
Identifier
ISSN:0141-8610
Reviewed
Reviewed
12 Visitors 13 Hits 0 Downloads
Save/E-mail Citation
Citation Format
E-mail Address
Subject
"Philosophical Magazine A: Physics of Condensed Matter Structure Defects and Mechanical Properties"
 
OR