Magnetic and magnetotransport properties of nanocrystalline Ag0.85Fe0.15 and Ag0.70Fe0.30 alloys prepared by mechanical alloying

Authors
Gomez, JA Xia, SK Passamani, EC Giordanengo, B Baggio-Saitovitch, EM
Citation
Ja. Gomez et al., Magnetic and magnetotransport properties of nanocrystalline Ag0.85Fe0.15 and Ag0.70Fe0.30 alloys prepared by mechanical alloying, J MAGN MAGN, 223(2), 2001, pp. 112-118
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
223
Issue
2
Year of publication
2001
Pages
112 - 118
Database
ISI
SICI code
0304-8853(200101)223:2<112:MAMPON>2.0.ZU;2-4
Abstract
The magnetic and magnetotransport properties of nanocrystalline Ag0.85Fe0.1 5 and Ag0.70Fe0.30 alloys have been studied by Mossbauer spectroscopy, magn etization and resistivity measurements. The samples were prepared by mechan ical alloying of Fe and Ag powders in a high-energy ball mill. Mossbauer sp ectroscopy and magnetic measurements of the final milled samples indicate t he presence of single-domain 'Fe' particles. The magnetoresistance values, at 4.2 K and for a magnetic field of 8 T, are 2.5% and 5.7% for samples Ag0 .85Fe0.15 and Ag0.70Fe0.30, respectively. The magnetoresistance behavior in dicates the cluster-glass-like features in both the final milled samples, ( C) 2001 Elsevier Science B.V. All rights reserved.