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1 Materials Science Poland

1 2016

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Experimental and theoretical approaches on thermal and structural properties of Zn doped BSCCO glass ceramics

Koralay H., Hicyilmaz O., Cavdar S., Ozturk O., Tasci A. T.

Materials Science Poland

2016

Vol. 34, No. 1

25--32

Thermal properties of Cu–Zn partially substituted Bi1.8Sr2Ca2Cu3.2-xZnx10+δ (x = 0, 0.1 and 0.5) glass-ceramic systems have been investigated with the help of a differential thermal analyzer (DTA) by using Johnson-Mehl-Avrami-Kolmogorov (JMAK) approximation. Non-isothermal crystallization kinetics of the samples has been tested. The calculated values of activation energy of crystallization (E) and Avrami parameter (n) ranged between 306.1 and 338.3 kJ.mol-1 and 1.29 and 3.59, respectively. Crystallization kinetics was compared following the partial substitution, before and after Zn doping of the sample. In addition, by using a scanning electron microscope (SEM) and X-ray powder diffractometer (XRD), structural properties of Zn doped BSCCO glass-ceramic samples were determined. Surface morphology of the samples was studied by SEM measurements. Lattice parameters and volume of the samples were calculated from the XRD measurements.