Abstract
Novel Fe-rich Fe-based bulk glassy alloys with unusual combination of high saturation magnetization ( J s) and high glass-forming ability (GFA) have been developed. The representative Fe 76Si 9B 10P 5 (atomic percent) alloy exhibits with high J s of 1.51 T, comparable to the Fe–Si–B amorphous alloy ribbons with thickness of about 25 μm in now practical use, because of without any glass-forming metal element other than Fe, which significantly decreases J s, as well as high GFA leading to a rod-shaped specimen of 2.5 mm in diameter. This bulk glassy alloy also shows extremely low coercivity of 0.8 A/m at a glassy state with a higher degree of atomic density of dense random packed structure by optimum annealing. Therefore, the alloy composed of familiar elements with the excellent properties and low material cost should have a great advantage for engineering and industry, and also make a contribution to conservation of environment and earth resources.
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