Suppression of crystal nucleation in amorphous layers with sharp concentration gradients

P. J. Desré and A. R. Yavari
Phys. Rev. Lett. 64, 1533 – Published 26 March 1990; Erratum Phys. Rev. Lett. 64, 2732 (1990)
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Abstract

Using simple thermodynamic arguements, it is shown that sharp concentration gradients occurring during diffusive mixing of multilayer composites facilitate amorphization by solid-state reaction by reducing or suppressing the driving force for crystallization ΔGac. As the concentration gradients diminish during diffusive layer growth, the driving force for crystalline phase formation is restored and the energetic barrier to their nucleation to the classical expression. This evolution yields a critical maximum amorphous-layer thickness as observed experimentally.

  • Received 11 December 1989

DOI:https://doi.org/10.1103/PhysRevLett.64.1533

©1990 American Physical Society

Erratum

Authors & Affiliations

P. J. Desré and A. R. Yavari

  • Laboratoire de Thermodynamique et Physico-Chimie Métallurgiques, Institut National Polytechnique de Grenoble, Boîte Postale 75, Domaine Universitaire, Saint-Martin-d’Hères, France

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Issue

Vol. 64, Iss. 13 — 26 March 1990

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