Experimental and theoretical approaches on thermal and structural properties of Zn doped BSCCO glass ceramics
MATERIALS SCIENCE-POLAND, vol.34, no.1, pp.25-32, 2016 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 34 Issue: 1
- Publication Date: 2016
- Doi Number: 10.1515/msp-2016-0027
- Journal Name: MATERIALS SCIENCE-POLAND
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.25-32
- Keywords: BSCCO, Zn-doped glass-ceramics, thermal properties, ACTIVATION-ENERGY, CRYSTALLIZATION, KINETICS, BI2SR2CACU2O8
- Open Archive Collection: AVESIS Open Access Collection
- Gazi University Affiliated: Yes
Abstract
Thermal properties of Cu-Zn partially substituted Bi1.8Sr2Ca2Cu3.2-xZnxO10+delta (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.