FeSiBP bulk metallic glasses with unusual combination of high magnetization and high glass-forming ability

Akihiro Makino, Takeshi Kubota, Chuntao Chang, Masahiro Makabe, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)


Among many kinds of bulk metallic glasses (BMGs), Fe-based BMGs with good magnetic properties, high strength and low materials cost should have great potential for wide variety of applications. However, the glass-forming metal elements such as Al, Ga, Nb, Mo, Y and so forth in the Fe-based BMGs significantly decrease saturation magnetization (Js) which is a essential property as soft magnetic materials and also increase the material cost. The coexistence of high Fe content and high glass-forming ability (GFA) has been earnestly desired from academia to industry. We report a novel Fe 76Si9B10P5 (at%) bulk metallic glass with unusual combination of high 7, of 1.51 T due to high Fe content and high GFA leading to a glassy rod with a diameter of 2.5 mm despite not-containing any glass-forming metal elements. This alloy composed of familiar and low-priced elements, also exhibiting very excellent magnetic softness and rather high strength, has a great advantage for engineering and industry, and thus should make a contribution to conservation of earth resources and environment through energy saving.

Original languageEnglish
Pages (from-to)3024-3027
Number of pages4
JournalMaterials Transactions
Issue number11
Publication statusPublished - 2007 Nov


  • Grass-forming ability
  • High magnetization
  • Metallic glass
  • Soft magnetic material

ASJC Scopus subject areas

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


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