Hysteresis and unusual magnetic properties in the singular Heusler alloy $Ni45Co5Mn40Sn10$

The alloy $Ni45Co5Mn40Sn10$ is shown to be singular relative to nearby alloys in three following ways: (1) The austenite has remarkably high magnetization $(1170emu/cm3)$ and low magnetic anisotropy. (2) The thermal hysteresis is near minimum. (3) The transformation temperature $∼135°C$ is unusually high. Because the unusually large magnetization and low hysteresis is seen at relatively small applied fields, applications such as magnetic shape memory, energy conversion, and solid state refrigeration may become practical.