The magneto-impedance (MI) effect of coupled magnetic ribbons in a non-uniform magnetic field

Issue title: Proceedings of the tenth International Symposium on Applied Electromagnetics and Mechanics ISEM-Tokyo

Article type: Research Article

Authors: Iida, Satoko^a | Suzuki, Daisuke^a | Kambe, Shiro^a | Ishii, Osamu^a

Affiliations: [a] Graduate School of Science and Engineering Yamagata University, 3-4-16 Johnan, Yonezawa, 992-8510 Yamagata, Japan. Tel.: 81 238 26 3395; Fax: 81 238 263177; E-mail: [email protected]

Abstract: We investigated the application of a magnetic ribbon to a highly sensitive magnetic sensor. The sensor employs the impedance change in a coupled magnetic ribbon when a radio frequency (rf) current is passed through it and an external magnetic field is applied. When the non-uniform external field was applied the coupled ribbon structure was conformed to have high sensitivity, which was about ten times higher than that in the uniform external field. This phenomenon was attributed to the magnetostatic coupling between coupled magnetic ribbons.

DOI: 10.3233/JAE-2002-441

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 15, no. 1-4, pp. 111-116, 2002