...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Electric properties of carbon nano-onion/polyaniline composites: a combined electric modulus and ac conductivity study
【24h】

Electric properties of carbon nano-onion/polyaniline composites: a combined electric modulus and ac conductivity study

机译：碳纳米洋葱/聚苯胺复合材料的电性能：电模量和交流电导率的组合研究

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

The complex electric modulus and the ac conductivity of carbon nano-onion/ polyaniline composites were studied from 1 mHz to 1 MHz at isothermal conditions ranging from 15 K to room temperature. The temperature dependence of the electric modulus and the dc conductivity analyses indicate a couple of hopping mechanisms. The distinction between thermally activated processes and the determination of cross-over temperature were achieved by exploring the temperature dependence of the fractional exponent of the dispersive ac conductivity and the bifurcation of the scaled ac conductivity isotherms. The results are analyzed by combining the granular metal model (inter-grain charge tunneling of extended electron states located within mesoscopic highly conducting polyaniline grains) and a 3D Mott variable range hopping model (phonon assisted tunneling within the carbon nano-onions and clusters).
机译：在15 K至室温等温条件下，研究了碳纳米洋葱/聚苯胺复合材料的复电模量和ac导电率，其范围为1 mHz至1 MHz。电模量与直流电导率分析的温度相关性表明了两种跳跃机制。通过研究分散的交流电导率的分数指数与比例化的交流电导率等温线的分叉，可以实现热活化过程与交叉温度测定之间的区别。通过组合颗粒金属模型（位于介观高导电性聚苯胺晶粒内的扩展电子态的晶粒间电荷隧穿）和3D Mott可变范围跳跃模型（碳纳米洋葱和簇内的声子辅助隧穿），对结果进行了分析。

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