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Phys. Rev. Lett. 95, 096101 (2005) [4 pages]

Suppression of Capillary Wave Broadening of Interfaces in Binary Alloys due to Elastic Interactions

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B. J. Schulz1, B. Dünweg2, K. Binder1, and M. Müller1,3
1Institut für Physik, WA331, Johannes Gutenberg-Universität, Staudingerweg 7, D-55099 Mainz, Germany
2Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
3Department of Physics, University of Wisconsin-Madison, 1150 University Avenue, Madison, Wisconsin 53706-1390, USA

Received 3 December 2004; published 24 August 2005

By Monte Carlo simulations in the constant-temperature–constant-pressure ensemble a planar interface between unmixed A-rich and B-rich phases of a binary (A, B) alloy on a compressible diamond lattice is studied. No significant capillary wave broadening of the concentration profile across the interface is observed, unlike lattice models of incompressible mixtures and fluids. The distortion of the lattice structure across the interface is studied.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.096101
DOI:
10.1103/PhysRevLett.95.096101
PACS:
68.60.−p, 64.75.+g