Glassy magnetic behavior in nanocrystalline mechanically alloyed Fe-W-Ag

Authors
De Toro, JA Arranz, MA Barbero, AJ de la Torre, MAL Riveiro, JM
Citation
Ja. De Toro et al., Glassy magnetic behavior in nanocrystalline mechanically alloyed Fe-W-Ag, J MAGN MAGN, 231(2-3), 2001, pp. 291-293
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
231
Issue
2-3
Year of publication
2001
Pages
291 - 293
Database
ISI
SICI code
0304-8853(200106)231:2-3<291:GMBINM>2.0.ZU;2-H
Abstract
The origin of the spin-glass-like low-temperature phase in mechanically all oyed Fe30W40Ag30 has been investigated with hysteresis loops, AC and DC sus ceptibility measurements. The magnetic glassy behavior is revealed by the c haracteristic irreversibility between the zero-field-cooled (ZFC) and the f ield-cooled (FC) magnetization, and by the small frequency sensitivity of t he AC susceptibility vs. temperature peak. The collective freezing of inter acting nanoclusters is suggested as the mechanism responsible for the obser ved properties. (C) 2001 Elsevier Science B.V. All rights reserved.