Abstract
Mn-based alloys have attracted considerable research interest in exploring new materials for the next generation of high-density and low-cost spintronic devices due to their variety of physical properties. The Ni2In-type Mn-based hexagonal alloys have been discovered for their potential application in martensitic phase transformation functional materials. However, the magnetotransport properties in these alloys have not been well studied. In this work, a comprehensive study including structure, magnetism and magnetotransport has been carried out on the Ni2In-type MnYSn (Y = Ti, Mn and Fe) alloys. The variation of saturation magnetization and Curie temperature in MnYSn alloys are analyzed. The anomalous Hall conductivity of MnTiSn and MnFeSn are dominated by the skew scattering mechanism, reaching 60 and 93 Ω−1 cm−1 at 5 K. The magnetotransport properties in MnYSn alloys suggest that it could be a potential candidate for magnetic sensors.
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