The alloy Ni45 Co5 Mn40 Sn10 is shown to be singular relative to nearby alloys in three following ways: (1) The austenite has remarkably high magnetization (1170 emu/ 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.
Bibliographical noteFunding Information:
This work was supported by Grant No. MURI W911NF-07-1-0410 administered by ARO. It also benefitted from the support of AFOSR GameChanger program GRT00008581/RF60012388 and MURI N000140610530 (ONR).