Thermodynamic description of the Hg–Te binary system

Comment on “Thermodynamic description of the Hg–Te system” [Journal of Alloys and Compounds 494 (1–2) (2010) 102–108]

“…That is why the model calculations using two models look very similar as shown in Ref. [6]. Therefore, it is not reasonable to conclude that one model (either the two-sublattice ionic model or the associate model) is better than the other model (either the associate model or the two-sublattice ionic model), at least in a binary system, in describing thermodynamic properties of a phase.…”

“…Gierlotka [6] have thermodynamically assessed a binary Hg-Te system where the liquid phase was modeled using three different approaches: (1) two-sublattice ionic model, (2) associate model, and (3) random mixing model (referred to as subregular model in Ref. [6]).…”

“…[6]). Model parameters for each model were obtained after optimization process by reproducing all available experimental data within experimental error limit.…”

“…In the Hg-Te binary liquid, a strong SRO is observed at X Te = 0.5, therefore the binary liquid phase was modeled either by the twosublattice ionic model with the following formula [6]:…”

“…or by the associate model assuming random distribution of "HgTe" associate along with unassociated Hg and Te on a quasilattice [6]:…”