A NEW FERROMAGNETIC SHAPE MEMORY ALLOY SYSTEM

摘要

A ferromagnetic shape memory alloy having the composition: Co2Ni1-xGa1+x wherein x is a value such that the alloy exhibits an austenitic crystal structure above a characteristic phase transformation temperature and which exhibits a martensitic twinned crystal struture below the phase transformation temperature, and further being characterized by a magnetocrystalline anisotropy energy that is sufficient for enabling motion of twin boundaries of the martensitic twinned crystal structure in response to application of a magnetic field to the martensitic twinned crystal structure and an actuating element comprising the alloy.