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The Projectile Mass Dependence of the Amorphization Process and the Critical Temperature in the Ion Irradiated CuTi

Published online by Cambridge University Press:  26 February 2011

J. Koike ,
P. R. Okamoto  and
M. Meshii
J. Koike
Affiliation:
Department of Materials Science and Engineering,Northwestern University, Evanston,IL. 60208
P. R. Okamoto
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL.60439
M. Meshii
Affiliation:
Department of Materials Science and Engineering,Northwestern University, Evanston,IL. 60208
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Abstract

CuTi was irradiated with 1MeV Ne+ and Kr+ at various temperatures in the Argonne-HVEM interfaced to a tandem accelerator. The integrated intensity of diffuse ring was measured by a microdensitometer and analyzed by Gibbons model for the dose dependence of the amorphous volume. The results indicate that the direct amorphization occurs in a single damage zone with Kr+, but the overlapping of three damage zones is necessary with Ne+. The critical temperature for amorphization was 401±22K for Ne+ and 543±20K for Kr+, respectively. With Kr+, the critical temperature was nearly equal to the thermal crystallization temperature of an amorphous zone embedded in the crystalline matrix. Using the present observations, the relation between the amorphization process and the critical temperature is discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 100: Symposium – A Fundamentals of Beam-Solid Interactions and Transient Thermal Processing , 1988 , 57
Copyright
Copyright © Materials Research Society 1988

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References

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