High frequency magneto-impedance effects in (Co-Ti-O)/Bi-Ti-O multilayer films

H. Kijima, Y. Zhang, N. Kobayashi, S. Ohnuma, P. Muralt, N. Setter, H. Masumoto

Research output: Contribution to conferencePaperpeer-review

Abstract

(Co-Ti-O)/Bi-Ti-O multilayer films with 9 Co-Ti-O layers are prepared by tandem sputtering. The high frequency soft magnetic properties and magneto-impedance effects were investigated in the frequency range from 0.1 to 10 GHz. The films maintain the real part of permeability μ′ = 30 up to a few GHz, and exhibit a clear peak of imaginary part of permeability μ″ = 76.4 at the resonance frequency (fr). The μ″ value at fr decreases with increasing an external magnetic field (Hex) applied parallel to the rf magnetic field. From the frequency response of the films, the admittance (Y) shows notable change near f r, which decrease with increasing Hex.

Original languageEnglish
Pages56-58
Number of pages3
DOIs
Publication statusPublished - 2013
Event2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy, ISAF/PFM 2013 - Prague 4, Czech Republic
Duration: 2013 Jul 212013 Jul 25

Other

Other2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy, ISAF/PFM 2013
Country/TerritoryCzech Republic
CityPrague 4
Period13/7/2113/7/25

Keywords

  • high frequency soft magnetic properties
  • magneto-impedance effect
  • multifunctional properties
  • thin film

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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