Published September 18, 1995
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Journal Article
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Atomic diffusion in the supercooled liquid and glassy states of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 alloy
Chicago
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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.
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).Files
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