Magnetocaloric and magnetoresistance properties originated from a metamagnetic structural transition were investigated in a Fe-doped Ni_46.8Mn_38.1Sn_11.6Fe_3.5 alloy. After annealing, the alloy exhibited the intermartensite phase that contributed to the multiple abrupt magnetization and resistivity changes during heating process of martensite transformation. As a result, three successive magnetic entropy change ΔS_M peaks of 10.7, 14.5 and 9.7 J/kg·K at temperatures 275, 279 and 285 K respectively were observed, which was responsible for a wide working temperature span ΔT_FWHM of 273–287 K and thus a large effective refrigeration capacity RC_eff of 98.1 J/kg under 5.0 T. At the same time, a large negative magnetoresistance MR (e.g. over 26.7% at 275 K) was also revealed during heating process under 5.0 T. Such multi-functional magnetocaloric and magnetoresistance effects render Ni–Mn–Sn–Fe alloys promising working materials for magnetic refrigerants, information storage and thermal magnetoelectricity conversions.

_{在铁掺杂的 Ni 46.8} Mn _38.1 Sn _11.6 Fe _3.5合金中研究了源自超磁结构转变的磁热和磁阻特性。退火后合金呈现出马氏体间相，在马氏体转变加热过程中产生了多次突变磁化和电阻率变化。结果，在 275、279 和 285 K 温度下分别观察到三个连续的磁熵变化ΔS _M峰，分别为 10.7、14.5 和 9.7 J/kg·K，这导致工作温度跨度ΔT _FWHM为 273-287 K，因此有效制冷量RC_{在 5.0 T 下的eff}为 98.1 J/kg。同时，在 5.0 T 下的加热过程中也显示出较大的负磁阻MR（例如，在 275 K 时超过 26.7%）。这种多功能磁热和磁阻效应使 Ni– Mn-Sn-Fe 合金有望成为磁性制冷剂、信息存储和热磁电转换的工作材料。