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Atomic diffusion in the supercooled liquid and glassy states of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 alloy

Geyer, U. and Schneider, S. and Johnson, W. L. and Qiu, Y. and Tombrello, T. A. and Macht, M.-P. (1995) Atomic diffusion in the supercooled liquid and glassy states of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 alloy. Physical Review Letters, 75 (12). pp. 2364-2367. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:GEYprl95

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Abstract

The self-diffusivity of Be in the bulk metallic amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5 is investigated. Below the glass transition temperature the data suggest a single atomic jump diffusion behavior of Be. By taking into account the change in configurational entropy due to the glass transition, we explain the mechanism for diffusion of Be in the supercooled liquid state (i.e., above the glass transition) of Zr41.2Ti13.8Ni10Cu12.5Be22.5 by single atomic jumps in a slowly changing configuration of neighboring atoms.


Item Type:Article
Additional Information:©1995 The American Physical Society. Received 21 February 1995. We gratefully acknowledge stimulating discussions with R. Busch, K. Samwer, V. Naundorf, and G. von Minnigerode, and valuable assistance by A.P. Rice, X. Sun, and I. Dencks. This work was supported by the U.S. Department of Energy under Grant No. DE-FG03-86ER45242, by the DFG via SFB 345, and by the NSF (Grant No. DMR93-18931).
Subject Keywords:METALLIC-GLASS
Record Number:CaltechAUTHORS:GEYprl95
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:GEYprl95
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.75.2364
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4557
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:29 Aug 2006
Last Modified:26 Dec 2012 09:00

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