Nano-icosahedral Al-Mn-Ce phases: structure and local configurations

Authors
Manaila, R Macovei, D Popescu, R Devenyi, A Jianu, A Vasile, E Barna, PB Labar, JL
Citation
R. Manaila et al., Nano-icosahedral Al-Mn-Ce phases: structure and local configurations, MAT SCI E A, 294, 2000, pp. 82-85
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
294
Year of publication
2000
Pages
82 - 85
Database
ISI
SICI code
0921-5093(200012)294:<82:NAPSAL>2.0.ZU;2-H
Abstract
An icosahedral (i) Al-Mn-Ce nanophase is formed in rapidly quenched alloys. Ce induces a gradual change of the six-dimensional (6D) lattice from a sim ple icosahedral (SI) to a face-centered icosahedral (FCI) symmetry with rel axation of lattice distortions. X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) data support Ce location on FCI sites, al though off-center positions are suggested. (C) 2000 Elsevier Science B.V. A ll rights reserved.