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

Author

LoBue, M. ; Cornejo, D.R. ; Basso, V. ; Missell, F.P. ; Bertotti, G.

Author_Institution

IEN Galileo Ferraris & GNSM-CNR, Torino, Italy

Volume

35

Issue

4

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

2194

Lastpage

2196

Abstract

Magnetic viscosity measurements performed on nanocrystalline SmFeCo spring magnets with different Fe content are analyzed by the Preisach hysteresis model. The model gives a unified description of hysteresis and relaxation properties. Comparison between calculated and measured viscosity permits one to estimate the aftereffect activation volume υ. Calculated υ^1/3 values are approximately equal to the average grain size of the hard phase

Keywords

cobalt alloys; ferromagnetic materials; grain size; iron alloys; magnetic aftereffect; magnetic hysteresis; magnetic particles; magnetic relaxation; nanostructured materials; permanent magnets; samarium alloys; Fe content; Preisach hysteresis model; SmFeCo; aftereffect activation volume; average grain size; hard phase; hysteresis; magnetic aftereffects; magnetic viscosity; nanocrystalline SmFeCo; nanocrystalline SmFeCo spring magnets; relaxation properties; Grain size; Iron; Magnetic analysis; Magnetic hysteresis; Magnets; Performance analysis; Performance evaluation; Springs; Viscosity; Volume measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.774193

Filename

774193