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Varga, R.; Ryba, T.; Vargova, Z.; Saksl, K.; Zhukova, V.; Zhukov, A.
Scripta materialia, 10/2011, Letnik: 65, Številka: 8Journal Article
We report on the fabrication, and the magnetic and structural properties of novel glass-coated Ni 50.95Mn 25.45Ga 23.6 microwires with a metallic core diameter of 44 μm and a total diameter of 82 μm prepared by the Taylor–Ulitovsky method. These annealed microwires showed ferromagnetic behaviour with a well-defined easy axis that corresponds to the axis of the wire. X-ray diffraction confirmed a tetragonal martensitic structure with a lattice parameters a = 3.75 Å and c = 6.78 Å. The Curie temperature was estimated to be ∼315 K. The maximum entropy change at the magnetic transition was −0.7 J kg −1 K −1.
