Magnetization Measurements on “as Prepared” and Annealed Fe3-xMnxSi Alloys

Abstract

The magnetic properties of the alloy system Fe_3-xMn_xSi have been studied by measuring magnetization for samples with x = 0, 0.1, 0.25, 0.5, and by thermal scanning techniques for samples with x = 0, 0.1. The results reveal that the system is ferromagnetic in this
composition range. Zero field cooling and field cooling magnetization measurements indicate a similar magnetic ordering and magnetic anisotropy in all samples. The saturation magnetization for the annealed samples was higher than that for “as prepared” samples. Thisis attributed to the reduction of magnetic domain boundaries rather than to improving magnetic order as a result of
annealing. Further, T_C values determined from thermal DSC measurements are in good agreement with previously reported results based on magnetic measurements.

Keywords: Heusler Alloys, Magnetization, Magnetic Order.