Saturation magnetostriction and volume magnetostriction of Fe-Ni-Co amorphous ribbons

Abstract

The saturation magnetostriction and the volume magnetostriction in amorphous ribbons of Fe-Ni-Co system were measured from 77K to room temperature, by a three terminal capacitance method. The ternary diagram were given of the saturation magnetostriction and volume magnetostriction in (Fe x Co y Ni 1-x-y ) 78 Si 8 B 14 system. It was found that the largest saturation magnetostriction constant is 36×10 ^-6 for the composition Fe 65 Co 13 Si 8 B 14 at room temperature. The temperature dependence of the saturation magnetostriction and the volume magnetostriction in Fe-Ni-Co system were not a simple function of the temperature. The maximum value of volume magnetostriction δω/δH was observed for Fe 78 Si 8 B 14 to be 24×10 ^-10 Oe ^-1 at room temperature.