Melting and cooling processes in CdTe-ZnTe near the CdTe-rich side

Larysa P. Shcherbak; Oleh V. Kopach; Petro M. Fochuk; Andriy I. Kanak; Aleksey E. Bolotnikov; Ralph B. James

doi:10.1117/12.897628

27 September 2011 Melting and cooling processes in CdTe-ZnTe near the CdTe-rich side

Larysa P. Shcherbak, Oleh V. Kopach, Petro M. Fochuk, Andriy I. Kanak, Aleksey E. Bolotnikov, Ralph B. James

Proceedings Volume 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII; 81421L (2011) https://doi.org/10.1117/12.897628
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

We detailed, by differential thermal analysis (DTA), some features of the melting- and cooling-processes in CdTe-ZnTe with a ZnTe content of up to 10 mol. % by evaluating their influence on the parameters of melting and crystallization. We focused on the heating/cooling rate, the melt's maximum temperature, and the duration of holding the melt at this maximum. Using the interrelationship in the Kissinger equation, ln(V_h/(T_L^mp)²) = A+ E_a/(R T_L^mp), between the heating rate (V _h) and the maximal temperature of the melting process's endothermic effect ( T_L^mp ), we estimated the melting process's activation energy (E_a). In addition, we studied the temperature dependencies of the volume fraction of the solid phase that remained in the CdTe-ZnTe melts, and the influence of the melt's "thermal prehistory" on the parameters of its crystallization parameters. Due to these studies we assessed the temperature intervals of the solid phases' existence and the temperature intervals of melts' crystallization.

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Larysa P. Shcherbak, Oleh V. Kopach, Petro M. Fochuk, Andriy I. Kanak, Aleksey E. Bolotnikov, and Ralph B. James "Melting and cooling processes in CdTe-ZnTe near the CdTe-rich side", Proc. SPIE 8142, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII, 81421L (27 September 2011); https://doi.org/10.1117/12.897628

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