Frequency dependence of magneto-impedance in spin tunneling junction

Kazuo Shiiki, Hideo Kaiju, Shigeo Fujita, Takeshi Morozumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spin tunneling junctions (STJ) have potential applications in the next generation of magnetic recording read heads due to the large magnetoresistance ratio. The frequency dependence of the impedance of the tunneling junction is studied and the feasibility of this application is discussed. The tunneling junction, Al/Al2O3/Al, and coercive differential STJ, Co/Al2O3/Co, were fabricated onto glass substrates by ion-beam mask sputtering. The impedance was measured using a vector impedance meter in the frequency range 0.1 to 100 MHz. The results indicate that the change in the imaginary part of the magnetoimpedance must be detected in order to utilize the STJ, particularly in the high-frequency region.

Original languageEnglish
Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
EditorsJ. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0780373650, 9780780373655
DOIs
Publication statusPublished - 2002 Jan 1
Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2

Publication series

NameINTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
CountryNetherlands
CityAmsterdam
Period02/4/2802/5/2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films

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    Shiiki, K., Kaiju, H., Fujita, S., & Morozumi, T. (2002). Frequency dependence of magneto-impedance in spin tunneling junction. In J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, J. De Boeck, & R. Wood (Eds.), INTERMAG Europe 2002 - IEEE International Magnetics Conference [1001176] (INTERMAG Europe 2002 - IEEE International Magnetics Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2002.1001176