Temperature dependence of saturation magnetostriction measured for Fe81Si3.5B13.5C2 amorphous films by a bending method based on the Villari effect

Magnetostriction measurements were performed at different temperatures for Fe81Si3.5B13.5C2 METGLAS films using a strained substrate technique. The magnetostriction constant was deduced from magnetic properties measured using a vibrating sample magnetometer. The film strain was varied using a range of curved sample holders. From the change of magnetic anisotropy field as a function of controlled strain, the saturation magnetostriction constant can be determined with sufficient accuracy. The temperature dependence of magnetostriction of METGLAS Fe81Si3.5B13.5C2 from 9 to 287 K is reported. It is suggested that a single-ion mechanism of magnetostriction is dominant in this amorphous alloy. (author)