Extended Data Fig. 2: Characterization of thermally induced martensitic transformation (TIMT).
From: Unprecedented non-hysteretic superelasticity of [001]-oriented NiCoFeGa single crystals
a, Contour plot of temperature-dependent synchrotron XRD patterns of Co6, Co10 and Co20 fibres, respectively. The Co6 and Co10 fibres show a TIMT at 250 K and 170 K, respectively, but non TIMT down to 100 K for Co20 fibre. The color bar is the same for the three contour plots. The lattice parameters for Co6: a = b = c = 5.751(6) Å at room temperature for the cubic austenitic structure and are a = b = 3.810(4) Å and c = 6.507(7) Å at 200 K for the tetragonal martensitic structure. b, Resistivity and magnetization versus temperature curves of a Co20 fibre, which does not show any indication of the TIMT until 1.8 K.
