Icosahedral Al-Mn phases grown in diffusion-limited conditions

Authors
Popescu, R Barna, PB Constantin, M Devenyi, A Manaila, R
Citation
R. Popescu et al., Icosahedral Al-Mn phases grown in diffusion-limited conditions, THIN SOL FI, 360(1-2), 2000, pp. 46-51
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
THIN SOLID FILMS
ISSN journal
00406090 → ACNP
Volume
360
Issue
1-2
Year of publication
2000
Pages
46 - 51
Database
ISI
SICI code
0040-6090(20000201)360:1-2<46:IAPGID>2.0.ZU;2-4
Abstract
Sequential deposition of Mn on a polycrystalline Al layer at 523-573 K was found to result in an anomalous icosahedral (i) Al-Mn phase, characterized by alterations of intensity- and linewidth ratios. The anomalies suggest a non-equilibrium atom distribution, related to the limited diffusion of Al t hrough the already-formed layer of i-AlMn. The activation energy of Al diff usion was inferred from X-ray diffraction (XRD) data taken for different de position temperatures. (C) 2000 Elsevier Science S.A. All rights reserved.