Title :
Magnetic Properties of Heusler-Type NiMnGa Glass-Coated Microwires
Author :
Zhukova, Valentina ; Chernenko, Volodymyr ; Ipatov, Mihail ; Zhukov, Arcady
Author_Institution :
Dept. de Fis. de MaterialesFacultad de Quim., Univ. of Basque Country, San Sebastian, Spain
Abstract :
In this paper, we studied the magnetic properties of the Heusler-type NiMnGa glass-covered microwires. We observed that annealing conditions strongly affect the temperature dependence of magnetization and Curie temperature of microwires. After long (6 h) annealing of the microwires at 773 K, a ferromagnetic ordering is obtained with Tc ≈ 300 K, which is beneficial for a magnetic solid-state refrigeration.
Keywords :
Curie temperature; annealing; ferromagnetic materials; gallium alloys; magnetisation; manganese alloys; metallic glasses; nickel alloys; refrigeration; Curie temperature; Heusler-type glass-coated microwires; Magnetic Properties; NiMnGa; annealing; ferromagnetic ordering; magnetic solid-state refrigeration; magnetization; temperature 773 K; temperature dependence; Amorphous magnetic materials; Annealing; Magnetic domain walls; Magnetic domains; Magnetomechanical effects; Shape memory alloys; Heusler alloys glass-coated microwires; magnetic properties; magnetic refrigeration;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2437278
