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Investigation of beryllium diffusion in the supercooled liquid and glassy states of the amorphous alloy Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5) by high energy helium elastic backscattering

Qiu, Yuanxun and Geyer, U. and Schneider, S. and Macht, M.-P. and Johnson, W. L. and Tombrello, T. A. (1996) Investigation of beryllium diffusion in the supercooled liquid and glassy states of the amorphous alloy Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5) by high energy helium elastic backscattering. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 117 (1-2). pp. 151-155. ISSN 0168-583X. http://resolver.caltech.edu/CaltechAUTHORS:20141028-154328067

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Abstract

The elastic scattering cross section for ^9Be(α, α)^9Be has been measured in a strongly resonant region from 6.00 to 6.50 MeV at a laboratory angle of 177°. This reaction has been used to investigate Be diffusion in the bulk metallic amorphous alloy Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5) in the solid state (SS) as well as in the supercooled liquid state (SLS). Above the glass transition, i.e., in the SLS, a remarkable increase in the diffusivity of Be (about two orders of magnitude over a 40 K temperature interval) was observed, which can be explained with a modified Arrhenius fit, which takes into account the change in configurational entropy due to the glass transition.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://www.sciencedirect.com/science/article/pii/0168583X96002182PublisherArticle
http://dx.doi.org/10.1016/0168-583X(96)00218-2DOIArticle
Additional Information:© 1996 Elsevier Science B.V. Received 9 October 1995; revised form received 12 February 1996. This work was supported in part by the National Science Foundation Grant DMR 93-1893l. by the U.S. Department of Energy Grant No. DE-FG03-86ER45242, and by the U.S. Army Research Office Grant DAAH04-95-1-0233. We gratefully acknowledge valuable assistance by A. Rice, S. Stryker and I. Dencks.
Funders:
Funding AgencyGrant Number
NSFDMR 93-18931
Department of Energy (DOE)DE-FG03-86ER45242
Army Research Office (ARO)DAAH04-95-1-0233
Record Number:CaltechAUTHORS:20141028-154328067
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141028-154328067
Official Citation:Yuanxun Qiu, U. Geyer, S. Schneider, M.-P. Macht, W.L. Johnson, T.A. Tombrello, Investigation of beryllium diffusion in the supercooled liquid and glassy states of the amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5 by high energy helium elastic backscattering, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 117, Issues 1–2, 1 August 1996, Pages 151-155, ISSN 0168-583X, http://dx.doi.org/10.1016/0168-583X(96)00218-2. (http://www.sciencedirect.com/science/article/pii/0168583X96002182)
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ID Code:50962
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:29 Oct 2014 16:31
Last Modified:29 Oct 2014 16:31

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