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Slow Atomic Motion in Zr-Ti-Cu-Ni-Be Metallic Glasses Studied by NMR

Tang, X.-P. and Busch, Ralf and Johnson, William L. and Wu, Y. (1998) Slow Atomic Motion in Zr-Ti-Cu-Ni-Be Metallic Glasses Studied by NMR. Physical Review Letters, 81 (24). pp. 5358-5361. ISSN 0031-9007. doi:10.1103/PhysRevLett.81.5358.

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Nuclear magnetic resonance is used for the first time to detect slow atomic motion in metallic glasses, specifically, Be motion in Zr-Ti-Cu-Ni-Be bulk metallic glasses. The observations are not consistent with the vacancy-assisted and interstitial diffusion mechanisms and favor the spread-out free volume fluctuation mechanism for Be diffusion. Comparison with the results of Be diffusion measured by elastic backscattering the NMR results also indicates that the energy barriers for short- and long-range Be motion are the same.

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Additional Information:©1998 The American Physical Society Received 1 June 1998 We thank Dr. A. Kleinhammes and L. P. Potter for experimental assistance. This work was supported by the U.S. Army Research Office under Contract No. DAAH04-96-1-0185, the National Science Foundation under Contract No. DMR-9802101, and the Department of Energy under Contract No. DEFG-03-86ER45242.
Issue or Number:24
Record Number:CaltechAUTHORS:TANprl98
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8544
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Deposited On:19 Aug 2007
Last Modified:08 Nov 2021 20:51

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