Publication
Title
Atomic (phason) hopping in perfect icosahedral quasicrystals Al70.3Pd21.4Mn8.3 by time-of-flight quasielastic neutron scattering
Author
Abstract
We report neutron-scattering results on atomic hopping in quasicrystals (QC) in the system Al-Pd-Mn. Two distinct atomic jump times have been observed and studied as a function of temperature. The unusual temperature behavior reported previously for 3.9 Angstrom jumps in Al-Cu-Fe (and interpreted as evidence for assisted hopping) is also found here, such that it seems to be universal. We provide a full discussion of all previous quasi-elastic-scattering results in QC, and show that their most reasonable interpretation is in terms of atomic hopping (phason dynamics). The relation of these data to theoretical predictions of fast diffusion and depinning transitions in the phason dynamics is examined.
Language
English
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Publication
Lancaster, Pa : 1996
ISSN
1098-0121 [print]
1550-235X [online]
Volume/pages
53:6, p. 3150-3160
ISI
A1996TV64500046
Full text (Publishers DOI)
UAntwerpen
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 29.02.2012
Last edited 11.05.2017