Soft magnetic materials application in the RF range

Masahiro Yamaguchi, Ki Hyeon Kim, Shinji Ikedaa

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


Recent rapid progress of information technologies has enlarged the application fields of soft magnetic materials operating in GHz range. Firstly, this paper reviews the recent achievement of magnetic thin films applied in high-frequency devices. Then, a newly developed permeability measurement technique is introduced, and then ferromagnetic RF integrated inductors and noise suppressors are discussed from an application viewpoint. In particular, the influences of alignment between the patterned magnetic films and coil legs on the characteristics of inductors are manifested. As a result, a quality factor of 13 in a "shift type" inductor at 1.2 GHz was achieved.

Original languageEnglish
Pages (from-to)208-213
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Issue number2
Publication statusPublished - 2006 Sep


  • Ferromagnetic resonance
  • Integrated inductor
  • Noise suppressor
  • Patterned film
  • Quality factor
  • Taper etching

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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