Effect of Sr/Ba Ratio on Dielectric Properties of BSTN Ceramics |
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| Journal | Key Engineering Materials (Volumes 336 - 338) |
|---|---|
| Volume | High-Performance Ceramics IV |
| Edited by | Wei Pan and Jianghong Gong |
| Pages | 125-128 |
| DOI | 10.4028/www.scientific.net/KEM.336-338.125 |
| Citation | Zong Hui Zhou et al., 2007, Key Engineering Materials, 336-338, 125 |
| Online since | April, 2007 |
| Authors | Zong Hui Zhou, Xin Cheng, Pi Yi Du, Jun Chang, Shi Feng Huang, Ling Chao Lu, Zheng Mao Ye |
| Keywords | BSTN, Composite Ceramic, Dielectric Properties, Sr/Ba Ratio |
| Abstract | The phase composition of (1-x)BaO·xSrO·0.7TiO2·0.3Nb2O5 (BSTN) composite ceramics was analyzed by XRD, and the effect of Sr/Ba ratio on the dielectric properties of BSTN was investigated by impedance analyzer. The results showed that any sample with different x value contained two phases-the perovskite phase and the tungsten bronze phase. The dielectric constants of BSTN basically decreased while the tanδ increased with the increase in x value. Both dielectric constant and tanδ decreased with the applied frequency increased for the same x value. There were two Curie points for BSTN composite ceramics. The first one belonging to the perovskite phase decreased with the increase in x value, but the second one belonging to the tungsten bronze phase kept almost constant at about 300˚C. |
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