Crystallization and Magnetic Properties of Fe40Co 40Cu0.5Al2Zr9Si4B 4.5 and Fe62Co9.5Gd3.5Si 10B15 Amorphous Alloys

Amitava Mitra, Hang Yeon Kim, Baolong Shen, Nobuyuki Nishiyama, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Amorphous alloys with compositions Fe40Co40Cu 0.5Al2Zr9Si4B4.5 and Fe62Co9.5Gd3.5Si10B15, were prepared by the melt spinning technique in the form of ribbons. Three stages of crystallization process were found in both the alloys and the crystallization kinetics was studied. Supper cooled region was found in Fe 62Co9.5Gd3.5Si10B15 alloy indicating the ability of formation of bulk amorphous alloy and 1 mm diameter rod was prepared by Cu-mould casting. Curie temperature and the saturation magnetisation of this alloy were found to be 596 K and 0.98 T respectively. Relatively, higher Curie temperature (736 K) and saturation megnetisation (1.18 T) were observed in the as-spun state of Fe 40Co40Cu0.5Al2Zr9Si 4B4.5 alloy. Present study also indicated that partial crystallization of Fe40Co40Cu0.5Al 2Zr9Si4B4.5 alloy would further enhance the Curie temperature and saturation magnetisation.

Original languageEnglish
Pages (from-to)1562-1565
Number of pages4
JournalMaterials Transactions
Volume44
Issue number8
DOIs
Publication statusPublished - 2003 Aug

Keywords

  • Amorphous alloy
  • Coercivity
  • Crystallization
  • Curie temperature
  • High temperature magnetic materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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