20-22 May 2015
Asia/Bangkok timezone
The Centennial Celebration of General Relativity Theory and 80 Years of Thai Physics Graduate

Microstructure and Impedance Properties of Sr${}_{0.4}$Ca${}_{0.6}$La${}_4$Ti${}_5$O${}_{17}$ Ceramics Doped with ZnO

21 May 2015, 13:00
3h 30m
Board: MNA-06
Poster presentation Material Physics, Nanoscale Physics and Nanotechnology Poster-3

Speaker

Ms Supunnee Srikeawnawan (Department of Physics, Faculty of Science, Thaksin University Songkhla Campus, Songkhla, THAILAND 90000)

Description

The microstructure and impedance properties of Sr${}_{0.4}$Ca${}_{0.6}$La${}_4$Ti${}_5$O${}_{17}$ ceramics were studied and determined. The ceramic was doped with 1, 2 and 3% mol of ZnO and prepared using mixed oxide method. It was sintered at the temperature of 1,400 ${}^{\circ}$C for 3 hours. The x-rays diffraction (XRD) technique and scanning electron microscope (SEM) were employed to exam the ceramics microstructure. In addition, the impedance properties of the ceramics were studied and characterized. It was found that the single phase which is SrTiO${}_3$ was appeared in 3% mol of doped ZnO ceramic. The ceramic had the cubic crystal structure with the space group Pm-3m and the average of grain size was in the range of 0.9 $-$ 0.99 micrometer. Moreover, the ceramics behaved as a semiconductor with maximum value of real and imaginary parts of impedance equal to 8.23x10$^5$ and 6.39x10$^6$, respectively.

Primary author

Ms Supunnee Srikeawnawan (Department of Physics, Faculty of Science, Thaksin University Songkhla Campus, Songkhla, THAILAND 90000)

Co-authors

Dr Nikom Chusiri (Department of Physics, Faculty of Science, Thaksin University Songkhla Campus, Songkhla, THAILAND 90000) Dr Prasong Kessaratikoon (Department of Physics, Faculty of Science, Thaksin University Songkhla Campus, Songkhla, THAILAND 90000) ประไพ คงรัตน์ (Department of Physics, Faculty of Science, Thaksin University Songkhla Campus, Songkhla, THAILAND 90000)

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