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|Title:||Synthesis and properties of doped ZnO ceramics|
|Authors:||Poddenezhny, E. N.|
Drobishevskaya, N. E.
Mazanik, A. V.
Korolik, O. V.
Fedotov, A. S.
Fedotov, A. K.
Svito, I. A.
Koltunowicz, T. N.
|Keywords:||ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика|
|Publisher:||Society of Polish Electrical and Electronics Engineers|
|Citation:||Electrical Review. - 2016. – Vol. 92, № 11. - P. 232 - 235|
|Abstract:||In our work, we studied zinc oxide ceramic samples doped with aluminum and gallium. Structure peculiarities of ceramics depending on their synthesis regime were investigated by the SEM, EDX, XRD, and Raman spectroscopy methods. It was demonstrated that at some technological conditions the formation of indesirable phases of zinc aluminate or gallate may occur preventing an uniform material doping and reducing quality of samples. Single-phase ZnO ceramics were produced when the nanostructured alumina powders were used as a dopant source. The correlations between the synthesis regimes of ZnO ceramics and their electrophysical parameters essential for thermoelectric figure-of-merit (electrical conductivity and Seebeck coefficient) have been established. The best electrophysical characteristics were obtained when the nanostructured alumina produced by combustion in isopropyl alcohol was used as a dopant. Conductivity and Seebeck coefficient of such ceramics are equal to 3·103 S/m and -0.27 mV/K, respectively, corresponding to the power factor of 2.2·10-4 W/(m·K2).|
|Appears in Collections:||Кафедра энергофизики|
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