AC magnetic field-induced rotation in levitating magnetostrictive wire

Author

Luna, C. ; Raposo, V. ; Rauscher, G. ; Vázquez, M.

Author_Institution

Inst. de Ciencia de Mater., CSIC, Madrid, Spain

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

3180

Lastpage

3182

Abstract

The rotation of magnetostrictive wires under excitation of an alternating axial magnetic field is a phenomenon discovered few years ago. Previous results and a recent mechanical experiment indicate that the appearance of these rotations is related to the sample vibrations associated to magnetoelastic resonance. This surprising behavior is here experimentally reported in polycrystalline FeNi levitating wires. An introductory analysis considering the balance of gravitational, magnetic gradient, and eddy-current forces is additionally carried out.

Keywords

eddy currents; iron alloys; magnetic forces; magnetic levitation; magnetoelastic effects; magnetostriction; nickel alloys; rotation; vibrations; AC magnetic field; FeNi; FeNi polycrystalline magnetostrictive wire; eddy current force; gravitational force; magnetic gradient force; magnetic levitation; magnetoelastic resonance; mechanical rotation; mechanical vibration; Amorphous magnetic materials; Glass; Magnetic field measurement; Magnetic fields; Magnetic levitation; Magnetic resonance; Magnetostriction; Solenoids; Vibrations; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802407

Filename

1042490