Magnetism of 3d and 4d doped MnTNiGe (T = Fe, Co, Ru and Rh): bulk magnetization and ab initio calculations.

We compare the magnetic properties of 3d (Fe and Co) and 4d (Ru and Rh) transition metals doped MnNiGe using the combined results of magnetization and ab initio calculations. The alloys crystallize in austenite NiIn-type hexagonal phase (space group: P6/mmc) with insignificant difference in the lattice parameters. MnFeNiGe and MnCoNiGe exhibit spin-glass behavior, resulting from the competing ferro- and antiferromagnetic interactions.

Impression of magnetic clusters, critical behavior and magnetocaloric effect in FeAl alloys.

Herein, we report unusual magnetic behavior in arc melted bulk stoichiometric FeAl alloy with a D0 structure. The temperature variation in the magnetization measurements revealed two transitions, i.e.