Citation
Dj. Freeland et al., Scaling behaviour and evolution of ferromagnetism in epitaxial Fe/GaAs(100) and Fe/InAs(100), THIN SOL FI, 344, 1999, pp. 210-213
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
THIN SOLID FILMS
ISSN journal
00406090
→ ACNP
Volume
344
Year of publication
1999
Pages
210 - 213
Database
ISI
SICI code
0040-6090(199904)344:<210:SBAEOF>2.0.ZU;2-M
Abstract
The scaling behaviour of the thickness evolution of ferromagnetism in singl
e crystal Fe films on GaAs(100)-4 x 2 and InAs(100)-4 x 2, grown by molecul
ar beam epitaxy, have been studied. In both systems there is a superparamag
netic-ferromagnetic transition whose onset occurs around 4.5 monolayers (ML
) Fe. The susceptibility around the transition follows a scaling behaviour;
chi similar to (1 - d/d(c))(-gamma) with gamma = 2.13 +/- 0.30 for Fe/GaAs
and gamma = 2.21 +/- 0.25 for Fe/InAs, suggesting the 2D percolation of cl
usters. (C) 1999 Elsevier Science S.A. All rights reserved.