Magnetic order and electronic transport properties in the Mn3Al compound: The role of the structural state

Magnetic States and Electronic Properties of Manganese-Based Intermetallic Compounds Mn2YAl and Mn3Z (Y = V, Cr, Fe, Co, Ni; Z = Al, Ge, Sn, Si, Pt)

“…However, ab initio calculations [20,58] in the D0 3 structure suggest that a compensated ferrimagnetic state with a zero moment and a half-metallic structure arises. The results from [59] are not fully supported by experimental data [28,29]. These data suggest that both the cast and RMQ Mn 3 Al alloys exhibit a frustrated antiferromagnetic state and an almost compensated ferrimagnetic state, respectively.…”

“…Typically, rapid melt quenching results in the formation of fine-grained structures, which can lead to increased resistivity due to the scattering of current carriers at grain boundaries. However, this phenomenon was not observed in the Mn 3 Al alloy studied [28,29]. Instead, the presence of manganese sulfide (MnS) precipitates at the grain boundaries occurred, explaining the high electrical resistivity values in the cast alloy.…”

“…Results [20] are in good agreement with refs. [28,29] where the electronic transport and magnetic characteristics of cast and rapid melt-quenched (RMQ) Mn 3 Al alloys were measured and compared.…”

“…The cast and RMQ alloys investigated in [28,29] have the β-Mn structure. This consists of two distinct sublattices, one of which is made up of triangles arranged perpendicular to the [111] axes and forming a three-dimensional kagome-like lattice.…”

“…The methods used to prepare intermetallic compounds, specifically those dealing with Mn 3 Z, can have a significant impact on their structural properties (see, e.g., refs. [25][26][27][28][29]). This, in turn, influences their electronic and magnetic states.…”