FERROMAGNETIC SHAPE MEMORY ALLOY AND ITS USE

摘要

This invention provides a ferromagnetic shape memory alloy comprising 25 to 50 atomic% of Mn, 5 to 18 atomic% in total of at least one metal selected from the group consisting of In, Sn and Sb, and 0.1 to 15 atomic% of Co and/or Fe with the balance consisting of Ni and unavoidable impurities. The ferromagnetic shape memory alloy has excellent shape memory properties in a practical temperature region and causes a magnetic field induced reverse transformation in a practical temperature region, whereby the magnetism is changed and the shape is recovered.