FIG. S1, FIG. S2, FIG. S3, FIG. S4, FIG. S5, TABLE SⅠ

FIG. S1. Powder XRD patterns for the arc-melted Ni50Mn34In16-xVx (x = 0, 1, 2, 3) alloys. FIG. S2. DSC curves for the directionally solidified Ni50Mn34In14V2 and Ni50Mn34In13V3 alloys. The inset shows the temperature dependence of specific heat capacity (Cp) obtained during heating. FIG. S3. Comparison on compressive stress-strain curves between the arc-melted and directionally solidified alloys at 295 K. (a) Ni50Mn34In14V2. (b) Ni50Mn34In13V3. FIG. S4. Stress-strain curves for the directionally solidified Ni50Mn34In13V3 alloy under compression at 315 K tested with a loading rate of 1.6 × 10-3 s-1 and unloading rate of 3 s-1. FIG. S5. Temperature dependence of magnetization (M(T)) curves under 0.005 T and 3 T for the directionally solidified Ni50Mn34In13V3 alloy. The inset shows the dM/dT as a function of temperature under 0.005 T. TABLE SⅠ. Martensitic transformation and Curie transition temperatures, and transformation entropy changes for the arc-melted Ni50Mn34In16-xVx (x = 0 ~ 3) determined from DSC measurements.