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Structural Criteria for Amorphization of Network Solids

Published online by Cambridge University Press:  16 February 2011

A. N. Sreeram  and
L. W. Hobbs
A. N. Sreeram
Affiliation:
Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
L. W. Hobbs
Affiliation:
Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Abstract

Amorphization, like glass-formation, represents fundamentally a failure to crystallize. The problem is to understand how atoms can rearrange themselves, perhaps within the confines of unaffected surrounding crystal, after a local disordering event. Some ceramics, like alkali halides and oxides with the rocksalt structure, appear almost impossible to amorphize, forming localized aggregate defects (voids, dislocation loops, colloids) and even decomposing (as a response to radiation disorder), rather than structurally reordering (or disordering). Other network solids such as silicas and silicates readily amorphize. In this study, we attempt to establish topology and structural freedom as criteria for amorphization of network solids.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 373: Symposium Y – Microstructure of Irradiated Materials , 1994 , 359
Copyright
Copyright © Materials Research Society 1995

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References

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