Atomic diffusion in the supercooled liquid and glassy states of the Zr{sub 41.2}Ti{sub 13.8}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5} alloy
Journal Article
·
· Physical Review Letters
- Keck Laboratory of Engineering Materials, California Institute of Technology, Pasadena, California 91125 (United States)
- Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, California 91125 (United States)
- Hahn-Meitner-Institut Berlin, Abt. Strukturforschung, 14109 Berlin (Germany)
The self-diffusivity of Be in the bulk metallic amorphous alloy Zr{sub 41.2}Ti{sub 13.8}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5} 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 Zr{sub 41.2}Ti{sub 13.8}Ni{sub 10}Cu{sub 12.5}Be{sub 22.5} by single atomic jumps in a slowly changing configuration of neighboring atoms.
- Research Organization:
- California Institute of Technology
- DOE Contract Number:
- FG03-86ER45242
- OSTI ID:
- 239434
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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