Fe-Si-B-P-Cu nanocrystalline alloy ribbons with high saturation magnetic flux density prepared using industrial materials

Akiri Urata, Hiroyuki Matsumoto, Shigeyoshi Yoshida, Akihiro Makino

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Magnetic properties and fine structure of Fe-Si-B-P-Cu nanocrystalline alloy ribbons have been investigated. The Fe84.8(Si,B,P) 14Cu1.2 alloy ribbons using industrial materials are produced by a single-roller melt-spinning method in air. The Fe 84.8(Si,B,P)14Cu1.2 nanocrystalline alloys exhibit low coercivity Hc of 7-20 A/m in the compositional range of Si=0-2 at% and P=2-8 at% and high saturation magnetic flux density Bs of 1.80 T or more in the compositional range of P=0-4 at%. In particular, Fe84.8Si1B10P3Cu1.2 nanocrystalline alloy annealed at 698 K exhibits both the high Bs of 1.82 T and the low Hc of 7.2 A/m. The iron loss W at 50 Hz of the Fe84.8Si1B10P3Cu1.2 nanocrystalline alloy is much smaller than oriented and nonoriented magnetic steel over the maximum induction Bm range up to 1.7 T. In addition, nanocrystalline structure of the Fe84.8Si1B 10P3Cu1.2 alloy exhibits a homogeneous nanocrystalline structure composed of α-Fe grains with 5-20 nm in diameter even using industrial materials. Therefore, the Fe-Si-B-P-Cu nanocrystalline alloy has good soft magnetic properties and a large economical advantage of low material cost by using industrial materials.

Original languageEnglish
Article number6028177
Pages (from-to)3177-3179
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - 2011 Oct
Externally publishedYes


  • High saturation magnetic flux density
  • industrial materials
  • nanocrystalline alloy
  • soft magnetic materials

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


Dive into the research topics of 'Fe-Si-B-P-Cu nanocrystalline alloy ribbons with high saturation magnetic flux density prepared using industrial materials'. Together they form a unique fingerprint.

Cite this