Abstract

In this work we report the fabrication and magnetocaloric behaviour of glass – coated Ni2FeGa microwires. The magnetic glass-coated microwires were produced using the Taylor-Ulitovsky technique from a bulk Ar arc melted pellet of nominal composition Ni2FeGa using SIMAX® glass; highly pure Ni (99.95 %), Fe (99.9 %) and Ga (99.99 %) were used as raw materials. The metallic core thickness in microwires was estimated to be 46 µm. The microstructure, elemental chemical composition and magnetic properties of microwires were studied by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and magnetization measurements. The magnetocaloric effect was evaluated in perpendicular and parallel directions to the wire´s axis. The magnetocaloric response is higher in parallel direction.