Effect of demagnetizaing field on frequency dispersoin of complex permeability

Sho Muroga, Masahiro Yamaguchi

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

1 Citation (Scopus)

Abstract

This paper describes that the ferromagnetic resonance (FMR) frequency shift can be calculated by an electromagnetic field simulator based on the Maxwell's equation although the relative permeability and the FMR frequency is defined by the Landau-Lifshitz-Gilbert (LLG) and the Kittel's equation. We evaluate the magnetic circuit model with the leakage magnetic flux path for considering the demagnetizing field generated in the magnetic film. As the result, we clarify that the effect of the demagnetizing field is considered as a reluctance of the leakage magnetic flux path in the magnetic circuit calculation, which is considered as the increase of anisotropy field in the Kittel's equation. Furthermore, we show that the simulated FMR frequency by the electromagnetic simulator agrees with the measured values.

Original languageEnglish
Title of host publicationEMC 2014/Tokyo - 2014 International Symposium on Electromagnetic CompatibiIity, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages785-788
Number of pages4
ISBN (Electronic)9784885522871
Publication statusPublished - 2014 Dec 23
Event2014 International Symposium on Electromagnetic CompatibiIity, EMC 2014 - Tokyo, Japan
Duration: 2014 May 122014 May 16

Publication series

NameIEEE International Symposium on Electromagnetic Compatibility
Volume2014-December
ISSN (Print)1077-4076
ISSN (Electronic)2158-1118

Other

Other2014 International Symposium on Electromagnetic CompatibiIity, EMC 2014
CountryJapan
CityTokyo
Period14/5/1214/5/16

Keywords

  • demagnetizing field
  • electromagnetic simulator
  • ferromagnetic films
  • ferromagnetic resonance frequency
  • on-chip electromagnetic noise suppressor

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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