Ni2FeSi Heusler Glass Coated Microwires

L. Galduna,b, T. Ryba a, V.M. Prida b, B. Hernando b, V. Zhukova c, A. Zhukov c, 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 cDepartamento de Física de Materiales, Facultad de Ciencias, UPV/EHU, 20009 San Sebastian, Spain dInstitute of Chemistry, Faculty of Sciences, P.J. Safarik University, Moyzesova 11, 040 01 Košice, Slovakia

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We report on fabrication, structural and magnetic properties of novel Heusler-type glass coated Ni2FeSi microwires that were prepared by the Taylor-Ulitovsky method, having a metallic nucleus diameter about 3.9 μm and total sample diameter of 39 μm. This single step and low cost fabrication technique offers to prepare up to km of glass-coated microwires starting from few g of cheap elements for diverse applications. The X-ray diffraction data from the metallic nucleus indicates L21 crystalline structure (a=5.563 Å), with a possible DO3 disorder. Magnetic measurements determined the Curie temperature well above the room temperature (770 K) together with uniform: easy magnetization axis of the metallic core, which predisposes this material to a suitable candidate for spintronic applications.

DOI: 10.12693/APhysPolA.131.851 PACS numbers: 71.20.Be, 72.20.Lp