Formation of FeAs and Fe crystallites in GaAs-Fe composite structures and their roles in light-enhanced magnetization

Authors
Haneda, S Koshihara, S Munekata, H
Citation
S. Haneda et al., Formation of FeAs and Fe crystallites in GaAs-Fe composite structures and their roles in light-enhanced magnetization, PHYSICA E, 10(1-3), 2001, pp. 437-441
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA E
ISSN journal
13869477 → ACNP
Volume
10
Issue
1-3
Year of publication
2001
Pages
437 - 441
Database
ISI
SICI code
1386-9477(200105)10:1-3<437:FOFAFC>2.0.ZU;2-2
Abstract
The model for the light-enhanced magnetization observed in the GaAs-Fe comp osite structures (S. Haneda ct al., J. Appl. Phys. 87 (2000) 6445.) has bee n constructed on the basis of studies on the nucleation process of Fe and G aAs, as well as the detail magnetization behavior. We have found that the F e clusters with the average diameter of 7 +/- 2 Angstrom is responsible for the light-enhanced magnetization. The role of antiferromagnetic FeAs is to magnetically suppress the interaction between the clusters at low temperat ures. (C) 2001 Elsevier Science B.V. All rights reserved.