Magnetization measurements on as prepared and annealed Fe3-xMnxSi alloys

TL;DR

This study investigates the magnetic properties of Fe3-xMnxSi alloys, revealing ferromagnetism across various compositions and showing that annealing increases saturation magnetization by reducing domain boundaries.

Contribution

It provides new insights into how annealing affects magnetic domain boundaries and saturation magnetization in Fe3-xMnxSi alloys.

Findings

Alloy system is ferromagnetic in studied composition range.

Annealed samples show higher saturation magnetization.

Thermal DSC measurements agree with magnetic measurement results.

Abstract

The magnetic properties of the alloy system Fe3-xMnxSi 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. This is attributed to the reduction of magnetic domain boundaries rather than to improving magnetic order as a result of annealing. Further, TC values determined from thermal DSC measurements are in good agreement with previously reported results based on magnetic measurements.