Reversal of circular magnetization in a thin wall cone by axial translation of a single circumferential domain wall

Author

Garshelis, Ivan J.

Author_Institution

Magnetoelastic Devices Inc., Pittsfield, MA, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4812

Lastpage

4814

Abstract

Reversal of the circular direction of magnetization in a thin wall conical member having a circumferential easy axis is shown to proceed by the axial translation of a single 180° domain wall. The entire cone is first remanently magnetized in one circular direction by a large enough coaxial current. An oppositely polarized circumferential domain is nucleated at the small end of the cone when the circular field from a reverse current reaches a critical amplitude. Radial expansion of this critical field with increasing current extends the reverse domain towards the large end of the cone. The field arising from small axial components of magnetization resulting from applied torsion allows ready detection of the axial position of the 180° wall

Keywords

magnetic domain walls; magnetisation reversal; magnetostriction; 180° domain wall; applied torsion; axial translation; circular magnetization reversal; coaxial current; critical field; reverse domain; single circumferential domain wall; thin wall cone; Coaxial components; Conducting materials; Magnetic devices; Magnetic domains; Magnetic materials; Magnetization reversal; Shape control; Shape measurement; Thin wall structures; Wires;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539160

Filename

539160