Magnetic Properties of an Fe-13P-7C Amorphous Ferromagnet : The Effects of Stress, Stress-Annealing and Magnetic-Field Annealing

Measurements have been made of the magnetization and its hysteresis loop of an Fe-13P-7C amorphous alloy in the form of ribbons. The as-quenched specimen is a typical soft ferromagnet with low coercive force. Application of tensile stress increases the remanence up to about 0.92 times the saturation magnetization. Twisting of the specimen results in the complete squareness of the hysteresis loop. By annealing, the effect of tensile stress on the magnetic properties can be stabilized permanently. A high permeability of the amorphous alloy is obtained by magnetic field-annealing