Conductive microbead array detection by high-frequency eddy-current testing technique with SV-GMR sensor

Author

Yamada, S. ; Chomsuwan, K. ; Hagino, T. ; Tian, H. ; Minamide, K. ; Iwahara, M.

Author_Institution

Dept. of Nature & Environ. Technol., Kanazawa Univ., Ishikawa, Japan

Volume

41

Issue

10

fYear

2005

Firstpage

3622

Lastpage

3624

Abstract

This paper describes the detection of conductive microbeads (PbSn) based on eddy-current testing (ECT) technique. High-frequency magnetic field applied to the conductive microbeads enables spin-valve giant magnetoresistance (SV-GMR) sensor to detect the magnetic fields occurred from eddy currents flowing in the conductive microbeads. In this paper, analysis of these magnetic fields by an analytical method is discussed and compared with experimental results.

Keywords

eddy current testing; giant magnetoresistance; lead alloys; magnetic sensors; micromagnetics; spin valves; tin alloys; PbSn; SV-GMR sensor; conductive microbead array detection; high-frequency eddy-current testing technique; magnetic field detection; spin-valve giant magnetoresistance sensor; Circuit testing; Eddy currents; Electrical capacitance tomography; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic sensors; Probes; Sensor arrays; Sensor phenomena and characterization; Conductive microbead; eddy-current testing; high-frequency; spin-valve giant magnetoresistance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.855172

Filename

1519390