Determination of temperature dependence of saturation magnetostriction for Fe81Si3.5B13.5C2 amorphous film using strained substrate technique

Abstract Measurements of magnetostriction were performed at different temperatures for Fe 81 Si 3.5 B 13.5 C 2 amorphous film using a bending method based on Villari effect. The magnetostriction constant was obtained from magnetic properties measured using a vibrating sample magnetometer. The quantity value of film strain is calculated from a special holder configuration. 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 amorphous Fe 81 Si 3.5 B 13.5 C 2 film from 9 to 287 K is reported. It is suggested that a single-ion mechanism of magnetostriction is dominant in this amorphous alloy in a range of temperature considered.