On the validity of a thermal spike mixing model for low-Z metals

P. Børgesen; D. A. Lilienfeld; H. H. Johnson; T. L. Alford; R. E. Wistrom

doi:10.1063/1.346685

On the validity of a thermal spike mixing model for low-Z metals

P. Børgesen, D. A. Lilienfeld, H. H. Johnson, T. L. Alford, R. E. Wistrom

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12 Scopus citations

Abstract

Low temperature ion beam mixing rates for Cu-Ti, Ni-Ti, and Fe-Ti layers have been found to be significantly lower than predicted by a popular semi-empirical thermal spike model. It has been proposed that the unavoidable hydrogen contamination of the as-deposited Ti films may have reduced the mixing rates, but the measurement of even lower mixing rates for Fe-V and Fe-Co bilayers shows the discrepancy to be more fundamental. Still, a systematic dependence on heat of mixing suggests that some sort of diffusional (thermal spike?) mechanism is involved.

Original language	English (US)
Pages (from-to)	1364-1366
Number of pages	3
Journal	Journal of Applied Physics
Volume	68
Issue number	3
DOIs	https://doi.org/10.1063/1.346685
State	Published - 1990
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.346685

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AU - Børgesen, P.

AU - Lilienfeld, D. A.

AU - Johnson, H. H.

AU - Alford, T. L.

AU - Wistrom, R. E.

PY - 1990

Y1 - 1990

N2 - Low temperature ion beam mixing rates for Cu-Ti, Ni-Ti, and Fe-Ti layers have been found to be significantly lower than predicted by a popular semi-empirical thermal spike model. It has been proposed that the unavoidable hydrogen contamination of the as-deposited Ti films may have reduced the mixing rates, but the measurement of even lower mixing rates for Fe-V and Fe-Co bilayers shows the discrepancy to be more fundamental. Still, a systematic dependence on heat of mixing suggests that some sort of diffusional (thermal spike?) mechanism is involved.

AB - Low temperature ion beam mixing rates for Cu-Ti, Ni-Ti, and Fe-Ti layers have been found to be significantly lower than predicted by a popular semi-empirical thermal spike model. It has been proposed that the unavoidable hydrogen contamination of the as-deposited Ti films may have reduced the mixing rates, but the measurement of even lower mixing rates for Fe-V and Fe-Co bilayers shows the discrepancy to be more fundamental. Still, a systematic dependence on heat of mixing suggests that some sort of diffusional (thermal spike?) mechanism is involved.

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On the validity of a thermal spike mixing model for low-Z metals

Abstract

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