Larysa Shcherbak

Regularities in the melting and crystallization of CdTe-Al alloys

Using the differential thermal analysis we investigated parameters of melting and crystallization processes of the CdTe based phase in CdTe-Al system near the CdTe side (CdTe + 2 mol. % Al, CdTe + 4 mol. % Al and CdTe + 6 mol. % Al). Varying temperatures of the melts intermediate isothermal holding for 10-, 30- and 60 minutes during their heating up to 1423 K we determined conditions of the melts full homogenization. It was concluded about change of the CdTe phase melting mechanism with Al content rise.

Differential thermal analyses of Cd0.95-xMnxZn0.05Te alloys

Peculiarities of Cd0.95-xMnxZn0.05Te (x=0.05-0.25) alloys melting and crystallization kinetics were investigated by the differential thermal analysis at various heating/cooling rates. We synthesized Cd0.95-xMnxZn0.05Te alloys from elemental materials in a double-zone furnace. Their melting-crystallization rate was 5- and 10-K/min with a melt-dwell time of 1-, 10-, 20-, and 30-minutes. We found that the melting temperature, Tm, declined with increasing “x”, while the crystallization temperature, Ts, rose with increasing “x”. We detailed the dependencies of the crystallization rate versus the melt’s crystallization temperature. In most cases, the dependencies dropped with the rise of the crystallization temperature, while the crystallization temperature fell with decreasing melt-dwell time.