SLOW MOTION IN A METALLIC LIQUID

Authors
MEYER A WUTTKE J PETRY W RANDL OG SCHOBER H
Citation
A. Meyer et al., SLOW MOTION IN A METALLIC LIQUID, Physical review letters, 80(20), 1998, pp. 4454-4457
Citations number
40
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
20
Year of publication
1998
Pages
4454 - 4457
Database
ISI
SICI code
0031-9007(1998)80:20<4454:SMIAML>2.0.ZU;2-7
Abstract
Liquid Zr46.8Ti8.2Cu7.5Ni10Be27.5 has been studied by quasielastic neu tron scattering. The microscopic dynamics of this bulk glass forming a lloy deviates qualitatively from simple metallic liquids; it shows two -step structural relaxation like other Liquids in their supercooled st ate. Unexpectedly for a nonfragile system, fast beta relaxation is in full accord with the mode-coupling theory of the liquid to glass trans ition. The long-time alpha relaxation suggests failure of the Stokes-E instein relation.