In this article, we review the recent progress in growth, structural characterizations, magnetic properties, and related spintronic devices of tetragonal Mn x Ga and Mn x Al thin films with perpendicular magnetic anisotropy. First, we present a brief introduction to the demands for perpendicularly magnetized materials in spintronics, magnetic recording, and permanent magnets applications, and the most promising candidates of tetragonal Mn x Ga and Mn x Al with strong perpendicular magnetic anisotropy. Then, we focus on the recent progress of perpendicularly magnetized Mn x Ga and Mn x Al respectively, including their lattice structures, bulk synthesis, epitaxial growth, structural characterizations, magnetic and other spin-dependent properties, and spintronic devices like magnetic tunneling junctions, spin valves, and spin injectors into semiconductors. Finally, we give a summary and a perspective of these perpendicularly magnetized Mn-based binary alloy films for future applications.
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Zhu et al. (2013) studied this question.