Magnetic properties of Mn-rich Pd2MnSn Heusler alloys

T. Kanomata, K. Endo, Y. Chieda, T. Sugawara, K. Obara, T. Shishido, K. Matsubayashi, Y. Uwatoko, H. Nishihara, R.Y. Umetsu, M. Nagasako, R. Kainuma

doi:10.1016/j.jallcom.2010.05.176

Magnetic properties of Mn-rich Pd2MnSn Heusler alloys

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書誌事項

公開日: 2010-08

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https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/j.jallcom.2010.05.176

公開者: Elsevier BV

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説明

Abstract Pd 2 Mn 1+ x Sn 1− x (0 ≤ x ≤ 0.30) alloys crystallize in the cubic L 2 1 structure. The lattice parameter a decreases linearly with increasing Mn concentration x . X-ray powder diffraction patterns indicate that the excess Mn atoms occupy the vacant Sn sites. All alloys exhibit the ferromagnetic behavior. The pressure change of the magnetic moment per formula unit at 5 K for Pd 2 MnSn is independent of pressure. The Curie temperature of Pd 2 Mn 1+ x Sn 1− x (0 ≤ x ≤ 0.30) alloys increases linearly with increasing x . Magnetization measurements make clear that the magnetic moment of Mn atoms, which substitute for Sn sites, is coupled antiferromagnetically to the magnetic moment of Mn atoms on the ferromagnetic Mn sublattice.