Magnetic viscosity effects in Co-alloy thin films with stacking faults

Citation
H. Laidler et L. Holloway, Magnetic viscosity effects in Co-alloy thin films with stacking faults, J MAGN MAGN, 226, 2001, pp. 1633-1635
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
0304-8853 → ACNP
Volume
226
Year of publication
2001
Part
2
Pages
1633 - 1635
Database
ISI
SICI code
0304-8853(200105)226:<1633:MVEICT>2.0.ZU;2-G
Abstract
We report magnetic measurements on CoCrPt sputtered thin films with stackin g fault densities ranging from 9% to 30%. These FCC-like faults mainly in t he HCP Co-alloy grains cause an increase in regions of low coercivity, thus promoting thermally activated magnetisation reversal. Significant differen ces in magnetic viscosity and switching field distributions were observed. A large increase in activation volume was observed for films with over 20% stacking faults. The reduction in the anisotropy fields by defects allows e xchange coupling to dominate the reversal, causing increased thermal activa tion. (C) 2001 Elsevier Science B.V. All rights reserved.