Abstract

Changes in structure and magnetic properties of Fe40Ni40B20 alloys were investigated as a function of the surface velocity, Vu, of the quenching substrates in the range 8 m/s≤Vu≤70 m/s. For Vu>30 m/s no changes were found. Below a “critical” region, 20 m/s≤Vu≤30 m/s, where changes in spin orientation are observed, crystallization processes are frozen in. The structure of one of the crystallization products, (FeNi)3B, appears to depend on the surface speed Vu.

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