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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.48  No.11 (2007)  >  pp.3024-3027

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FeSiBP Bulk Metallic Glasses with Unusual Combination of High Magnetization and High Glass-Forming Ability

Akihiro Makino1), Takeshi Kubota1), Chuntao Chang1), Masahiro Makabe1) and Akihisa Inoue2)
1) Institute for Materials research, Tohoku University
2) Tohoku University

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 Fe76Si9B10P5 (at%) bulk metallic glass with unusual combination of high Js 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.

soft magnetic material, Metallic glass, high magnetization, grass-forming ability

Received: August 10, 2007
Accepted: September 07, 2007 , Published online: October 25, 2007
Copyright (c) 2007 The Japan Institute of Metals



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