Unprecedented Integral-Free Debye Temperature Formulas: Sample Applications to Heat Capacities of ZnSe and ZnTe

Figure 8

Visualization of the unusually rapid approaches of truncated versions of the presently developed (unprecedented) high-temperature -series expansion, (– – – – –; see (A.11), for = 1 to 8), to the exact function (—), in comparison with the markedly slower approaches of truncated versions of Debye’s conventional high-temperature -series expansion [1, 2, 16, 21, 54], (– –⋅– –⋅–; see (A.7), for to 8).