Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1799690 | Journal of Magnetism and Magnetic Materials | 2014 | 6 Pages |
•Hg2CuTi-type structure is energetically favored in Heusler alloy Mn2RuSn.•Mn2RuSn becomes half-metallic with a small contraction of the lattice.•A tetragonal martensitic transformation is predicted in Mn2RuSn.•Mn2RuSn can be a potential candidate for spintronic applications like STT.
The site preference, electronic structure and magnetism of a newly discovered Heusler alloy Mn2RuSn have been investigated. The Hg2CuTi-type (XA) structure is found to be energetically favored in Mn2RuSn. Mn2RuSn is a normal ferrimagnetic metal at equilibrium lattice constant, but with 2% contraction of the lattice, it becomes a half-metal with a spin moment of 2μB. A tetragonal martensitic transformation is predicted in Mn2RuSn. The total moment of the tetragonal phase is near zero, which results in a large ΔM between the saturation moments of martensite and austenite. Finally, in tetragonal Mn2RuSn, a high spin polarization ratio of 93% is predicted. These properties make Mn2RuSn a potential candidate for spintronics materials.