Fig. 5. (a) Comparison of the calculated mixing enthalpies of substitutionally disordered solid solution, ordered solid solutions and ScTaN2-type structure phase of Sc1–xMxN, as a function of MN content where M = Ti, Zr, and Hf, respectively. (b) Calculated equilibrium lattice parameter for rocksalt (B1) Sc1–xMxN solid solution as a function of MN content where M = Ti, Zr, and Hf, respectively. The black line indicates Vegard's rule. For (Sc,Ti)N, experimental data from Gall et al. 22 are shown with stars. From ref. 96 (Copyright American Institute of Physics, used with permission).
