3d-electron induced magnetic phase transition in half-metallic semi-Heusler alloys

Details 3d-electron induced magnetic phase transition in half-metallic semi-Heusler alloys 3d-electron induced magnetic phase transition in half-metallic semi-Heusler alloys

2008-01-13

arxiv.org/abs/0801.1968v1

Physical Review B 77, 214417 (2008)

Physics

Condensed Matter

Materials Science

Scientific paper

We study the effect of the non-magnetic 3\textit{d} atoms on the magnetic properties of the half-metallic (HM) semi-Heusler alloys Co$_{1-x}$Cu$_{x}$MnSb and Ni$_{1-x}$Cu$_{x}$MnSb ($0 \leq x \leq 1$) using first-principles calculations. We determine the magnetic phase diagram of both systems at zero temperature and obtain a phase transition from a ferromagnetic to an antiferromagnetic state. For low Cu concentrations the ferromagnetic RKKY-like exchange mechanism is dominating, while the antiferromagnetic superexchange coupling becomes important for larger Cu content leading to the observed magnetic phase transition. A strong dependence of the magnetism in both systems on the position of the Fermi level within the HM gap is obtained. Obtained results are in good agreement with the available experimental data.

Affiliated with

Also associated with

No associations

Rating

3d-electron induced magnetic phase transition in half-metallic semi-Heusler alloys does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with 3d-electron induced magnetic phase transition in half-metallic semi-Heusler alloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3d-electron induced magnetic phase transition in half-metallic semi-Heusler alloys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-473021