ACTA

Influence of Mn Doping on Magnetic and Structural Properties of Co₂FeSi Heusler Alloy

L. Galdun^a,b, T. Ryba^a, J. Kováč^c, V.M. Prida^b, B. Hernando^b, Z. Vargová^d and R. Varga^a
^aInstitute of Physics, Faculty of Sciences, P.J. Safarik University, Park Angelinum 9, 041 54 Košice, Slovakia
^bDepartamento De Física, Facultad de Ciencias, Universidad de Oviedo, Calvo Sotelo s/n, 33007 Oviedo, Spain
^cInstitute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
^dInstitute of Chemistry, Faculty of Sciences, P.J. Safarik University, Moyzesova 11, 040 01 Košice, Slovakia

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We have studied the effect of Mn doping on structural and magnetic properties of Co₂FeSi Heusler alloy. Co₂FeSi, Co₂Mn_0.25Fe_0.75Si and Co₂Mn_0.5Fe_0.5Si alloys were prepared by melt spinning technique which offers fast and simple production of large amount of materials in a single production step. The rapid quenching method provides an opportunity to prepare Heusler alloys with highly ordered L2₁ structure confirmed by X-ray analysis in all the samples. Magnetic measurements revealed high Curie temperatures (>1000 K) and well defined easy magnetization plane parallel with the ribbon plane. Those attributes predispose given samples for applications in spintronics.

DOI: 10.12693/APhysPolA.131.866
PACS numbers: 71.20.Be, 72.20.Lp