Research Progress on Ni-Based Antiperovskite Compounds
(Color online) The Debye temperature, , and the DOS at , as a function of the lattice parameter for Ni-based antiperovskite compounds. The crossing dashed lines indicate the trends of (downwards) and (upwards) with increasing the lattice constant . The values are derived from specific heat data reported in [26, 29, 31, 32, 41]. The values are from theoretical calculations where corresponding calculated lattice constant is the closet to the experimental ones [4, 28, 30, 37, 39, 40, 42].