Correlation between the elastic shear instability mechanism and empirical criteria for irradiation-induced amorphization

J. Koike, P. R. Okamoto, L. E. Rehn, M. Meshii

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In an attempt to correlate the shear instability mechanism with empirical criteria for irradiation-induced amorphization, shear moduli of an A3B-type fcc crystal were calculated as a function of the chemical long range order parameter S using a Morse potential. The shear moduli were found to decrease with decreasing S. When the depth and the curvature of the A-B potential were changed while keeping the A-A and B-B potentials constant, the magnitude of the decrease in shear moduli is greater for deeper and narrower A-B potentials. The present results indicate that a shear instability should occur more readily in compounds with larger ordering energy and larger elastic moduli. These results agree with the reported empirical criteria for irradiation-induced amorphization, therefore providing further support for the shear instability mechanism for solid-state amorphization.

Original languageEnglish
Pages (from-to)471-474
Number of pages4
JournalNuclear Inst. and Methods in Physics Research, B
Volume59-60
Issue numberPART 1
DOIs
Publication statusPublished - 1991 Jul 1

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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