Electronic transport in Co-based half-metallic ferromagnetic Heusler alloys

27th International Conference on Low Temperature Physics

Marchenkov, V.V.^1 ; Kourov, N.I.^1 ; Belozerova, K.A.^1 ; Emelyanova, S.M.^1 ; Dyakina, V.P.^1 ; Marchenkova, E.B.^1 ; Eisterer, M.^2 ; Weber, H.W.^2

Institute of Metal Physics, Ekaterinburg

620990, Russia^1

Atominstitut, Vienna University of Technology, VIENNA

1020, Austria^2

关键词: Current conduction;    Electron spectrum;    Electronic transport;    Ferromagnetic Heusler alloy;    Ferromagnets;    Half-metallic;    Heusler alloys;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/5/052019/pdf
DOI  :  10.1088/1742-6596/568/5/052019

来源: IOP

【 摘 要 】

The electroresistivity of the Co-based half-metallic ferromagnetic Co2CrGa, Co2CrAl, Co2VAl, Co2MnAl Heusler alloys and the Ni2MnGa ferromagnets were measured in the temperature range from 4.2 to 900 K. Specific features in the electrical resistivity of the half-metallic ferromagnetic Heusler alloys were observed, which can be explained in terms of the two-current conduction model, taking into account the existence of an energy gap in the electron spectrum near the Fermi level.