The electronic charge transfer during the TiNi martensitic transition is pictured as a shift of thesband relative to thedband. Such a description not only is consistent with the earlier postulate that a portion of the valence electrons behaves covalentlike in TiNi II and metallike in TiNi III, but also gives a good account of the low‐temperature specific heat, magnetic susceptibility, enthalpy, and Hall coefficient changes observed during the transition. The strength of electron correlation is calculated to be 1.1 eV; the work‐function change during the transition is also about 1.1 eV.
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