Research Article

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

Table 1

Sets of the adjusted model-specific parameter values, which have been obtained (for properly fixed values) via combined least-mean-square fittings of the presently considered sets of low- and high-temperature isobaric heat capacity data, , for ZnSe (Figure 2) and for ZnTe (Figure 3), using (5) in combination with (9) and (14) to (17). In the lower part of Table 1 we have still quoted a series of characteristic, material-specific quantities (cf. the text), the actual values of which are resulting in unambiguous way from the fitted parameter values listed previously.

MaterialZnSeZnTe
T-ranges (K)2 to 6002 to 600

(K)270220
(K)78.3261.93
(K)109.488.01
(K)213.0167.1
(K)314.4263.4
0.06320.0698
0.23490.2331
(K−1)0.539 × 10−40.751 × 10−4
(K−2)0.600 × 10−71.011 × 10−7
(J⋅K−2mol−1)0.120 × 10−30.045 × 10−3

0.02440.0223
0.01080.0081
(J⋅K−4mol−1)0.1975 × 10−30.3651 × 10−3
(J⋅K−6mol−1)0.667 × 10−61.626 × 10−6

(meV)19.4316.05
((meV)2)448.2308.0
(K)225.5185.8
0.430.45
(K)317.1262.9

(J/K)48.1949.48
(J/K)72.1282.12
(kJ)10.18810.980