Structure and temperature dependence of magnetic properties in the nanocrystalline fe74six;b22-xcuinb3 alloys

Shoji Ikeda, Masaru Nagai, Yuji Ueda

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1 Citation (Scopus)


We have examined the structure and magnetic properties in terms of the temperature dependence of magnetic permeability and magnetization for the Fe74SiZB22-xCu1Nb3 (X = 8-18) alloys. The temperature dependence of the permeability of the alloys shows various characteristic behaviors depending on the alloy composition (x=8- 18) and annealing temperature (450-630°C). The permeability of the samples having coexisting a-Fe(Si) and amorphous phases decreases abruptly near the Curie temperature of the amorphous materials, while the permeability of the samples containing precipitated Fe-B compounds is not appreciably affected by the magnetism in the residual amorphous region. The precipitation of Fe-B compound depends on the composition of the mother alloys. The Fe-B compounds precipitated in the amorphous region upon annealing at high temperature are mainly Fe23Be for X = 14, FegB for £ = 18, and Fe2B for the composition x less than 12.

Original languageEnglish
Pages (from-to)6046-6052
Number of pages7
JournalJapanese journal of applied physics
Issue number11R
Publication statusPublished - 1995 Nov
Externally publishedYes


  • A-Fe(Si) grain
  • Amorphous
  • Curie temperature
  • Fe-B com pound
  • Fe-Si-B-Cu-Nb alloy
  • Magnetization
  • Permeability

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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