Mn-Pt and Mn-Pt-Based Alloys: Structural, Magnetic, and Mechanical Insights for Next-Generation Spintronic Devices

This review presents a concise and critical evaluation of Mn-Pt-based alloys, focusing on their structural stability, magnetic behavior, and suitability for spintronic applications. The L1 0 phase of Mn-Pt is highlighted for its high Néel temperature (~975 K), strong magnetocrystalline anisotropy, and excellent mechanical robustness, establishing it as a leading antiferromagnetic material. A central contribution of this work is the systematic analysis of transition metal doping (Fe, Co, Ni, Pd, Cr), revealing its role in tuning magnetic moments, modifying phase stability, and enhancing functional properties. The review further identifies rare-earth doping as a promising yet underexplored strategy for significantly improving coercivity, anisotropy, and thermal stability through enhanced spin-orbit coupling. Key research gaps are outlined, including limited experimental validation, insufficient temperature-dependent studies, and lack of comprehensive spin transport analysis. By integrating theoretical and experimental insights, this work proposes future directions in alloy design, thin-film engineering, and advanced characterization for next-generation spintronic technologies.