Dielectric and tunable properties of barium strontium titanate ceramics under the stresses
Dielectric and tunable properties of barium strontium titanate ceramics under the stresses
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DOI：
10.1016/j.jallcom.2011.06.025
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发表时间：
2011-08
影响因子：
6.2
通讯作者：
Qiwei Zhang;J. Zhai;X. Yao
中科院分区：
文献类型：
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作者：
Qiwei Zhang;J. Zhai;X. Yao
研究了Sr 1 − xTiO 3（x=0.65）陶瓷的介电性能和调谐性能与外加应力的关系。结果表明，随着外加应力的增加，样品的居里峰受到抑制和展宽，居里温度（Tc）略微向低温移动。相应地，在10 kV/cm的直流电场下，在C-T相变附近，可调谐性从66.6%下降到58.8%。这些结果对Sr 1 − xTiO 3陶瓷的器件设计和实际应用具有指导意义。
The external stress dependence of dielectric and tunable properties of BaxSr1−xTiO3(x=0.65) ceramics has been investigated. The results reveal that the Curie peaks of samples are suppressed and broadened, the Curie temperature (Tc) is slightly shifted to lower temperature with an increase of external stress. Correspondingly, the tunability decreases from 66.6% to 58.8% in the vicinity of cubic–tetragonal (C–T) phase transition at an applied DC electric field of 10kV/cm. These results could be useful for the design of devices and practical applications of BaxSr1−xTiO3ceramics.