Speaker
Ms
Manlika Kamnoy
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
Description
In this work, barium titanate; BaTiO${}_3$ (BT) powder was successfully synthesized by the molten-salt method. The molten-salt method is a simple technique for preparation of fine powder also can control the shapes and sizes in the order of nanometers. The metal oxides of BaCO${}_3$ and TiO${}_2$ were mixed and ball-milled. After that, BT powder were mixed with KCl : NaCl salt and then washed with hot DI water. Heating temperatures were studied in the range of 800 to 1000 ${}^{\circ}$C with using dwelling time of 2 hours. In order to investigate the microstructure and phase structure, they were studied by SEM and XRD techniques. The results found that all samples showed a single pure perovskite phase using a low temperature of $\sim$900 ${}^{\circ}$C , which was confirmed by JCPDS No. 01-083-1879. The grain shapes of BT powder had a mixing of polygon and equiaxed grains. The particle size of BT powder increased from $\sim$381 to $\sim$860 nm with increasing heating temperatures from 800 to 1000 ${}^{\circ}$C. Results confirmed that BT nanoparticles were obtained by using the molten salt method.
Author
Ms
Manlika Kamnoy
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
Co-author
Dr
Sukum Eitssayeam
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
