Combinatorial synthesis of Ni-Mn-Ga-(Fe,Co,Cu) high temperature ferromagnetic shape memory alloys thin films

摘要

High temperature ferromagnetic shape memory alloys (HT-FSMAs) in form of a thin film materials library of Ni-Mn-Ga, alloyed with Fe, Co and Cu has been fabricated by co-sputtering and characterized by high-throughput screening techniques. The weak dependence of martensitic transformation temperature and tetragonal ratio of the martensitic lattice on the doping composition and their irregular variation are ascribed to the competitive influence of the alloying elements Fe, Co and Cu. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.