Reconstruction of two-dimensional magnetization and susceptibility distributions from the magnetic field of soft magnetic materials

Author

Tan, Shaofen ; Ma, Yu Pei ; Thomas, Ian M. ; Wikswo, John P., Jr.

Author_Institution

Electromagn. Lab., Vanderbilt Univ., Nashville, TN, USA

Volume

32

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

230

Lastpage

234

Abstract

We apply a spatial filtering technique to solve the two-dimensional magnetization imaging problem. This allows us to reconstruct the magnetization distribution from the measured magnetic field above a planar soft magnetic sample exposed to an applied magnetic field. Knowledge of the magnetizing field distribution can then be used to determine the susceptibility distribution and hence to obtain information about the material characteristics of the sample. By simulation of an actual experiment, we examine the spatial resolution of the resulting image and discuss the uniqueness of solutions to the inverse problem

Keywords

image reconstruction; image resolution; inverse problems; magnetic susceptibility; magnetisation; soft magnetic materials; spatial filters; inverse problem; magnetic field; magnetization imaging; material characteristics; soft magnetic materials; spatial filtering technique; spatial resolution; susceptibility distribution; two-dimensional magnetization distribution; Filtering; Image reconstruction; Inverse problems; Magnetic field measurement; Magnetic materials; Magnetic separation; Magnetic susceptibility; Magnetization; Soft magnetic materials; Spatial resolution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.477575

Filename

477575