Magnetic properties and microwave characteristics of Ni-Zn-Cu ferrite film fabricated by aerosol deposition method

T. Kagotani, R. Kobayashi, S. Sugimoto, K. Inomata, K. Okayama, J. Akedo

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

Microwave radiation in the GHz is increasingly being used in telecommunication and data processing. However, this has given rise to electromagnetic wave interference (EMI). Ni-Zn-Cu ferrite film was prepared by aerosol deposition method (ADM) depending on its capability as an absorber or a conducted noise suppressor in the quasi-microwave frequency range. The ADM is a kind of high-speed coating method. The film thickness of 7 μm was obtained by the deposition for 4 min and the rate was estimated at 2.8 μm/min. The saturation magnetization of the film was 6.33×10-5 Wb m/kg and the coercivity was 0.94 kA/m. This value was nearly equal to that of sintered sample. The maximum complex permeabilities μ′ and μ″ were 200 and 70. The resonance frequency fr=200MHz was over Snoek's limit.

Original languageEnglish
Pages (from-to)1442-1445
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume290-291 PART 2
DOIs
Publication statusPublished - 2005 Apr

Keywords

  • ADM
  • EMC
  • Microwave absorption
  • Spinel ferrite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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