Galvanomagnetic properties of Ni 2MnIn, Ni 2MnSn and Ni 2MnSb heusler alloys

Abstract

The field and temperature dependences of the electrical resistivity, Hall effect and transverse magnetoresistance of Ni 2MnIn and Ni 2MnSb are described over the approximate ranges 4–300 K and 0–4.8×10 6 Am -1, together with measurements of the magnetization in the range 0–1.6×10 6 Am –1. Together with existing data for Ni 2MnSn, these results show the systematic effects of the shifting Fermi level in the In→Sn→Sb series. We give a qualitative interpretation of these electron transport effects in terms of a delocalized picture.