...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica, B. Condensed Matter >Structural, electrical and dielectric investigations of cerium doped barium zirconate (BaZrO3) nano-ceramics produced via green synthesis: Probable candidate for solid oxide fuel cells and microwave applications
【24h】

Structural, electrical and dielectric investigations of cerium doped barium zirconate (BaZrO3) nano-ceramics produced via green synthesis: Probable candidate for solid oxide fuel cells and microwave applications

机译：通过绿色合成产生的铈掺杂钡锆锆锆（Bazro3）纳米陶瓷的结构，电气和介电研究：用于固体氧化物燃料电池和微波应用的可能候选者

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cerium incorporated barium zirconate nano-ceramics BaZr1-xCexO3-x/2 were fabricated by eco-friendly green combustion using honey as a fuel. FTIR spectra evidenced a prominent band between 400 and 700 cm-1 characteristics of ABO3 perovskites. The bond-length (r) of Zr-O bond is extended through doping of Ce ions. Consequently, the communication among Zr and O bond is weakened. The electrical conductivity rises with temperature, demonstrating that BaZr1-xCexO3-x/2 exhibits ionic and/or electron-hole conduction. The conductivity is observed to enhance with the Ce3+ concentration. At 850 C, the solid x = 0.10 exhibits enhanced conductivity of 0.0190 S/cm than that of pristine BaZrO3 (0.010 S/cm). The increasing trend of conductivity may be due to decreased grain boundary resistance effect and generation of oxygen vacancies. Dielectric behaviour shows slight frequency dependence performance, the dielectric constant was high (epsilon = 35-45) in lower frequency region. The dielectric constant declines on enhancing Ce-content which can be explained on the Maxwell-Wagner model.
机译：以蜂蜜为燃料，采用绿色环保燃烧法制备了铈掺杂锆酸钡纳米陶瓷BaZr1-xCexO3-x/2。FTIR光谱证明ABO3钙钛矿在400到700cm-1之间有一个显著的谱带特征。Zr-O键的键长（r）通过掺杂Ce离子而延长。因此，Zr和O键之间的通讯减弱。电导率随温度升高而升高，表明BaZr1-xCexO3-x/2表现出离子和/或电子空穴传导。电导率随着Ce3+浓度的增加而增加。在850℃时，固体x=0.10的电导率比原始BaZrO3（0.010 S/cm）提高了0.0190 S/cm。电导率的增加趋势可能是由于晶界电阻效应的降低和氧空位的产生。介电行为表现出轻微的频率依赖性，在低频区介电常数较高（ε=35-45）。介电常数随着Ce含量的增加而下降，这可以用麦克斯韦-瓦格纳模型来解释。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号