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Bulk amorphous Fe 65.5 Cr 4 Mo 4 Ga 4 P 12 C 5 B 5.5 rods with diameters of 1.5-3 mm were prepared by copper mold casting. Besides casting, bulk amorphous Fe 77 Al 2.14 Ga 0.86 P 8.4 C 5 B 4 Si 2.6 samples in the shape of discs (diameter of 10 mm and thickness of 3 mm) were prepared from melt-spun ribbons by high-energy ball milling and subsequent compaction of the resulting powders in the supercooled liquid region. The ascast amorphous FeCrMoGaPCB samples exhibit a low coercivity, below 10 A·m −1 . In the case of the FeAlGaPCBSi alloy, the milling-induced stress causes significant differences in coercivity between the ribbons and the powders. The relatively low coercivity of about 5-10 A·m −1 characteristic for the melt-spun ribbons increases after 1 hour of ball milling to a value of about 2200 A·m −1 . Subsequent annealing of the ball-milled powders leads to a decrease of H c by a factor of 10 to about 220-250 A·m −1 . The bulk samples prepared by hot pressing of the crushed ribbons show a coercivity of about 120-140 A·m −1 . For both alloys, thermal stability measurements show a distinct glass transition, followed by a supercooled liquid region of 60 K for Fe 65.5 Cr 4 Mo 4 Ga 4 P 12 C 5 B 5.5 and of 30 K for Fe 77 Al 2.14 Ga 0.86 P 8.4 C 5 B 4 Si 2.6 . For the Fe 65.5 Cr 4 Mo 4 Ga 4 P 12 C 5 B 5.5 alloy, crystallization of the amorphous phase as observed by in-situ X-ray diffraction measurements in transmission configuration occurs via the formation of a metastable intermediate phase. The phases observed in the crystalline state obtained by heating do not correspond to those occurring after slow cooling.

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