Magnetic field optical sensors using (TbY) IG crystals with stripe magnetic domain structure

Author

Okubo, K. ; Kamada, O.

Author_Institution

Dept. of Electron. Eng., Polytechnic Univ., Kanagawa, Japan

fYear

2005

fDate

4-8 April 2005

Firstpage

431

Lastpage

432

Abstract

In this work, a new type of magnetic field sensor based on the Faraday effect by the rotation of magnetization in the stripe magnetic domain is proposed. As a Faraday element a mixed rare-earth iron garnet (TbY) IG bulk crystal with the stripe domain structure is used. In this paper, the characteristics of the small linearity error and the wide dynamic rang obtained by eliminating both influences of the small wall coercive force in the domain wall displacement process and the diffraction by the periodic domain structure are represented.

Keywords

Faraday effect; garnets; magnetic domain walls; magnetic structure; magneto-optical sensors; terbium compounds; Faraday effect; Faraday element; domain wall displacement; magnetic field optical sensors; magnetization rotation; mixed rare-earth iron garnet bulk crystal; periodic domain structure; stripe magnetic domain structure; Crystals; Faraday effect; Garnets; Iron; Linearity; Magnetic domains; Magnetic sensors; Magnetization; Optical sensors; Sensor phenomena and characterization;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1463644

Filename

1463644