Effect of Mn Concentration on Magneto-mechnaical Properties in Directionally Solidified Ferromagnetic Shape Memory Ni-Mn-Ga Alloys

Abstract

Heusler type alloys Ni 50 Mn 25+x Ga 25-x (x = 2, 3, 4, and 5) based on near stoichiometric Ni 2 MnGa compositions were directionally solidified using modified Bridgman method. The alloys thus prepared were characterised for their chemical composition, crystal structure, microstructure, phase transformation, magnetic and magneto-mechanical