Nanoscale Order in ZnTe:(Cd, O)

Vyacheslav A. Elyukhin

doi:10.4028/www.scientific.net/AMR.740.483

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 740Nanoscale Order in ZnTe:(Cd, O)

Nanoscale Order in ZnTe:(Cd, O)

Abstract:

Self-assembling of 1O4Cd identical tetrahedral clusters resulting to nanoscale order in ZnTe:(Cd, O) is presented. Such co-doping transforms ZnTe into Cd_xZn_1-xO_yTe_1-yalloy. The decrease of the strain energy is a cause of this phenomenon. The self-assembling conditions are obtained by the minimum condition of the free energy of ZnTe:(Cd, O) at the Cd and oxygen in the dilute and ultra dilute limits, respectively. An occurrence of 1O4Cd clusters and completion of self-assembling (all oxygen atoms are in clusters) are results of the continuous phase transitions. The temperature of the occurrence of self-assembling does not depend on the oxygen content and it is a function of Cd concentration only. Cd_xZn_1-xO_yTe_1-y with all oxygen atoms in clusters may be obtained in temperature ranges from T = 270 °C (x = 0.002, y = 1×10^-4) to T = 620 °C (x = 0.02, y = 1×10^-4) and from T = 240 °C (x = 0.005, y = 0.001) to T = 580 °C (x = 0.02, y = 0.001).

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Advanced Materials Research (Volume 740)

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483-487

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https://doi.org/10.4028/www.scientific.net/AMR.740.483

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August 2013

Authors:

Vyacheslav A. Elyukhin

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Isoelectronic Impurities, Self-Assembling, Semiconductor

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