Exploring the effect of chromium doping on electronic properties, half-metallic and ferromagnetism on AlSb DMS compound through first-principles calculations

Abstract

With the aim of improving and investigating magnetocaloric insights for spintronic applications, we investigated the electronic structure of Cr-doped AlSb compounds via first-principles calculations using the KKR-CPA-DFT method. Here, we investigated the stability of alloy materials as a function of magnetic contamination. A stable semimetallic ferromagnetic phase can be obtained by introducing the Cr element into AlSb, which is inherent in nonmagnetic semiconductors. The total magnetic moment of the doped material changes from 0.1167 μB to 0.716 μB for 4% and 25% Cr, respectively. Curie temperature changed to 740 K at 25% Cr concentration.

KEY WORDS: Magnetic materials, Semiconductor, Alloys, Impurities

Bull. Chem. Soc. Ethiop. 2024, 38(2), 297-304.                                                            

DOI: https://dx.doi.org/10.4314/bcse.v38i2.2