Evolution of Intrinsic Magnetic Properties in L1 0 Mn−Al Alloys Doped with Substitutional Atoms and Correlated Mechanism: Experimental and Theoretical Studies

Mn-Al alloys are promising candidates to fill the performance gap between rare-earth permanent magnets and ferrites, but improving the intrinsic magnetic properties of Mn-Al alloys in the ordered $L{1}_{0}$ phase is not easy. Doping seems to be essential. This work investigates the influence of substitutional atoms on the alloy's intrinsic magnetic properties. The occupation rules for substituents with different valence-electron structures are analyzed, and a strategy to boost the alloy's magnetic properties is developed. This insight should help to promote the engineering of devices that do not rely on rare-earth-bearing magnets, which is of keen interest.