Impedance property of thin film GMI sensor with controlled inclined angle of stripe magnetic domain

T. Nakai, H. Abe, S. Yabukami, K. I. Arai

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The giant magnetoimpedance (GMI) effect of controlled-inclination magnetic stripe domain for a thin-film GMI sensor is investigated. The inclined stripe domain structure has an inclined angle of domain walls against the transverse direction of the rectangular-strip element. It is obtained that GMI profile changes from a profile with a dip point at the zero magnetic field to a profile with one maximum impedance only at the zero field at an angle of 70°. In the case of GMI profile with a dip point, increasing the inclination angle decreases the bias field. This reduction of the bias field more than triples the sensor gain. An excellent linear property extending for wide range is obtained. A steplike impedance change property is also realized by this method.

Original languageEnglish
Pages (from-to)1355-1358
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume290-291 PART 2
DOIs
Publication statusPublished - 2005 Apr 1

Keywords

  • Domain structure
  • Sensors
  • Thin films
  • Uniaxial anisotropy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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