The Experts below are selected from a list of 12 Experts worldwide ranked by ideXlab platform
L. M. Pavlova - One of the best experts on this subject based on the ideXlab platform.
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Volume Changes during Melting and Heating of Zinc and Cadmium Tellurides
High Temperature, 2001Co-Authors: V. M. Glazov, L. M. PavlovaAbstract:The method of penetrating γ-radiation is used to investigate the temperature dependence of the density of condensed phases of zinc and Cadmium Tellurides in the vicinity of the melting point and to determine volume changes during transition from the solid to liquid state. The density of zinc telluride in the liquid phase is investigated for the first time. It is demonstrated that, during melting, the density of both investigated compounds decreases and continues to decrease linearly on heating in the liquid state. It is noted that, in accordance with Regel's classification, zinc and Cadmium Tellurides melt down by the semiconductor–semiconductor pattern. The volume changes of the investigated compounds during melting are analyzed using the Clausius–Clapeyron equation. The pressure coefficients of the melting temperature of these compounds are estimated, and it is noted that they are positive (dT / dp > 0). The thermal expansion of zinc and Cadmium Tellurides in the solid and liquid phases is analyzed; the equation of Sirota is used to calculate the characteristic Debye temperatures from which the mean-square dynamic displacements of atoms from the equilibrium position in the structure of condensed phases are determined at the melting point of the investigated compounds.
V. M. Glazov - One of the best experts on this subject based on the ideXlab platform.
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Volume Changes during Melting and Heating of Zinc and Cadmium Tellurides
High Temperature, 2001Co-Authors: V. M. Glazov, L. M. PavlovaAbstract:The method of penetrating γ-radiation is used to investigate the temperature dependence of the density of condensed phases of zinc and Cadmium Tellurides in the vicinity of the melting point and to determine volume changes during transition from the solid to liquid state. The density of zinc telluride in the liquid phase is investigated for the first time. It is demonstrated that, during melting, the density of both investigated compounds decreases and continues to decrease linearly on heating in the liquid state. It is noted that, in accordance with Regel's classification, zinc and Cadmium Tellurides melt down by the semiconductor–semiconductor pattern. The volume changes of the investigated compounds during melting are analyzed using the Clausius–Clapeyron equation. The pressure coefficients of the melting temperature of these compounds are estimated, and it is noted that they are positive (dT / dp > 0). The thermal expansion of zinc and Cadmium Tellurides in the solid and liquid phases is analyzed; the equation of Sirota is used to calculate the characteristic Debye temperatures from which the mean-square dynamic displacements of atoms from the equilibrium position in the structure of condensed phases are determined at the melting point of the investigated compounds.
M.s. Voloshynovych - One of the best experts on this subject based on the ideXlab platform.
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Defects subsystem and homogeneity region of ZnTe and CdTe crystals
Journal of Crystal Growth, 2018Co-Authors: I. V. Horichok, Taras Parashchuk, Mariia Pylyponiuk, Oksana Soroka, M.s. VoloshynovychAbstract:Abstract Based on the comparison of theoretical calculations of the point defects formation energy by ab initio method and their concentration by the thermodynamic potentials method with the experimental data of the Hall effect study and the homogeneity region width of zinc and Cadmium Tellurides, it was shown that in the ZnTe crystals, as in the CdTe crystals, at the chalcogen saturation the dominant defects are cationic vacancies and antistructural chalcogen atoms, whose point symmetry corresponds to the Td group. When both zinc and Cadmium Tellurides are saturated with the metal, the most probable type of the dominant point defects is the electroneutral chalcogen vacancy, the formation of which is accompanied by the significant relaxation of the nearest atoms and loss of initial symmetry.
I. V. Horichok - One of the best experts on this subject based on the ideXlab platform.
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Defects subsystem and homogeneity region of ZnTe and CdTe crystals
Journal of Crystal Growth, 2018Co-Authors: I. V. Horichok, Taras Parashchuk, Mariia Pylyponiuk, Oksana Soroka, M.s. VoloshynovychAbstract:Abstract Based on the comparison of theoretical calculations of the point defects formation energy by ab initio method and their concentration by the thermodynamic potentials method with the experimental data of the Hall effect study and the homogeneity region width of zinc and Cadmium Tellurides, it was shown that in the ZnTe crystals, as in the CdTe crystals, at the chalcogen saturation the dominant defects are cationic vacancies and antistructural chalcogen atoms, whose point symmetry corresponds to the Td group. When both zinc and Cadmium Tellurides are saturated with the metal, the most probable type of the dominant point defects is the electroneutral chalcogen vacancy, the formation of which is accompanied by the significant relaxation of the nearest atoms and loss of initial symmetry.
Taras Parashchuk - One of the best experts on this subject based on the ideXlab platform.
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Defects subsystem and homogeneity region of ZnTe and CdTe crystals
Journal of Crystal Growth, 2018Co-Authors: I. V. Horichok, Taras Parashchuk, Mariia Pylyponiuk, Oksana Soroka, M.s. VoloshynovychAbstract:Abstract Based on the comparison of theoretical calculations of the point defects formation energy by ab initio method and their concentration by the thermodynamic potentials method with the experimental data of the Hall effect study and the homogeneity region width of zinc and Cadmium Tellurides, it was shown that in the ZnTe crystals, as in the CdTe crystals, at the chalcogen saturation the dominant defects are cationic vacancies and antistructural chalcogen atoms, whose point symmetry corresponds to the Td group. When both zinc and Cadmium Tellurides are saturated with the metal, the most probable type of the dominant point defects is the electroneutral chalcogen vacancy, the formation of which is accompanied by the significant relaxation of the nearest atoms and loss of initial symmetry.
