Iron Self-Diffusion in Chemically Homogeneous Multilayers

Abstract:

Iron self-diffusion measurements in amorphous and nanocrystalline chemically homogenous multilayers (CHM) of FeZr/57FeZr, (with nm range periodicity) have been studied with neutron reflectivity technique. It has been found that both the activation energy for diffusion and the pre-factor were significantly smaller as compared with bulk alloys. Effect of compressive stress on self-diffusion reveals a significant dependence on the activation energy as a function of applied stress. On the basis of the obtained results the diffusion mechanism in amorphous and nanocrystalline CHM of FeZr/57FeZr is reviewed in this paper.

• Periodical: Defect and Diffusion Forum (Volumes 237-240)
• Pages: 548-553
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.237-240.548
• Online since: April 2005
• Authors: Mukul Gupta, Ajay Gupta, Sujoy Chakravarty, Thomas Gutberlet
• Keywords: Amorphous Multilayers, Nanocrystalline Multilayers, Neutron Reflectivity, Self-Diffusion

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