Application of nanocrystalline soft magnetic Fe-M-B (M=Zr, Nb) alloys to choke coils

Y. Naitoh, T. Bitoh, T. Hatanai, A. Makino, A. Inoue

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


We have developed a choke coil made of new nanocrystalline soft magnetic Fe-M-B (M=Zr, Nb) alloys ("NANOPERM™" material) which exhibit high saturation magnetic induction (Bs), above 1.5 T, excellent soft magnetic properties and zero magnetostriction. A choke coil made of NANOPERM™ material exhibits good dc bias characteristics of inductance because of the high Bs. Furthermore, the choke coil made from NANOPERM™ material showed 1/3rd the temperature rise shown by a core made from Fe-Si-B amorphous alloy. The low core loss and high Bs of NANOPERM™ material allow the reduction of the core size. It is concluded that NANOPERM™ is suitable as a core material for choke coils.

Original languageEnglish
Pages (from-to)6332-6334
Number of pages3
JournalJournal of Applied Physics
Issue number11
Publication statusPublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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