|
Influence of BLT content on phase structure and electrical properties of (1-x)BT-xBLT ceramic |
|---|---|
| รหัสดีโอไอ | |
| Creator | Thanawat KLAYTAE |
| Title | Influence of BLT content on phase structure and electrical properties of (1-x)BT-xBLT ceramic |
| Contributor | Navavan THONGMEE, Rattiphorn SUMANG, Soodkhet POJPRAPAI |
| Publisher | Metallurgy and Materials Science Research Institute, Chulalongkorn University |
| Publication Year | 2561 |
| Journal Title | Journal of Metals, Materials and Minerals |
| Journal Vol. | 28 |
| Journal No. | 1 |
| Page no. | 109-115 |
| Keyword | BT-BLT, Ferroelectric properties, Dielectric properties, Hysteresis loop |
| URL Website | http://ojs.materialsconnex.com/index.php/jmmm/index |
| Website title | Journal of Metals, Materials and Minerals |
| ISSN | 8576149 |
| Abstract | (1-x)BaTiO3-x(Bi3.25La0.75)Ti3O12; (1-x)BT-xBLT ceramics with x = 0-0.20 wt.% were prepared by a solid-state reaction method. The BaTiO3 (BT) and (Bi3.25La0.75)Ti3O12 (BLT) powders were, respectively, calcined at 1100ฐC and 750ฐC for 4 h. The (1-x)BT-xBLT samples were sintered between 1250ฐC and 1350ฐC. The structure exhibited a transformation from tetragonal to orthorhombic with increasing in BLT contents. The average grain size increased with increasing BLT contents. The maximum density and relative density about 6.19 ฑ 0.07 g/cm3 and 99.3% were obtained for the composition of 0.95BT-0.05BLT. The Curie temperature (Tc) continuously decreased with increase in BLT contents. The dielectric constant showed a broad peak and pronounced dependence on frequency, which implied an existence of the relaxor behavior. The hysteresis parameters such as saturation polarization (Ps?18.06 ?C/cm2), remanent polarization (Pr?12.64 ?C/cm2) and coercive field (Ec?11.09 kV/cm) can be improved when BLT content is increased to 0.05 wt.%. |
