Analysis of magnetic aftereffects in nanocrystalline SmFeCo by the Preisach hysteresis model

Authors
LoBue, M Cornejo, DR Basso, V Missell, FP Bertotti, G
Citation
M. Lobue et al., Analysis of magnetic aftereffects in nanocrystalline SmFeCo by the Preisach hysteresis model, IEEE MAGNET, 35(4), 1999, pp. 2194-2196
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
35
Issue
4
Year of publication
1999
Pages
2194 - 2196
Database
ISI
SICI code
0018-9464(199907)35:4<2194:AOMAIN>2.0.ZU;2-2
Abstract
Magnetic viscosity measurements performed on nanocrystalline SmFeCo spring magnets with different Fe content are analyzed by the Preisach hysteresis m odel. The model gives a unified description of hysteresis and relaxation pr operties, Comparison between calculated and measured viscosity permits one to estimate the aftereffect activation volume upsilon. Calculated upsilon(1 /3) values are approximately equal to the average grain size of the hard ph ase.