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Temperature Dependence of Amorphization above 10K in the CuTi Intermetallic Compound Under Electron Irradiation

Published online by Cambridge University Press:  28 February 2011

J. Koike ,
D. E. Oluzzi ,
M. Meshii  and
P. R. Okamoto
J. Koike
Affiliation:
Department of Materials Science and Engineering, Northwestern University, Evanston, IL., 60201
D. E. Oluzzi
Affiliation:
Department of Materials Science and Engineering, Northwestern University, Evanston, IL., 60201
M. Meshii
Affiliation:
Department of Materials Science and Engineering, Northwestern University, Evanston, IL., 60201
P. R. Okamoto
Affiliation:
Materials Science and Technology Division, Argonne National Laboratory, Argonne, IL., 60439
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Abstract

The critical dose required to amorphize the crystalline compound CuTi during irradiation with 1 MeV electrons has been investigated from 10 to 288 K. The results show that above a critical temperature (Tc) of about 185 K, CuTi remains crystalline and only defect clusters are formed. Below Tc, amorphization occurs with no observable cluster formation. The critical dose for amorphization was found to be temperature dependent below Tc: as the irradiation temperature increases, a higher dose is required to induce amorphization. This observation supports the concept that Tc corresponds to the vacancy migration temperature. Below Tc, interstitial migration may contribute to the observed reduction in the amorphization rate with increasing temperature.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 74: Symposium A – Beam-Solid Interactions and Transient Processes , 1986 , 425
Copyright
Copyright © Materials Research Society 1987

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