SrNaBi2Nb3O12 陶瓷的弛豫铁电行为与结构特征
材料科学
2011-12-13 v1
摘要
采用传统固相反应法制备了 SrNaBi2Nb3O12 粉体。X 射线结构研究确认该相属于 Aurivillius 氧化物家族的三层成员。SrNaBi2Nb3O12（SNBN）陶瓷表现出弛豫铁电体的典型特征，即宽化且弥散的介电最大值。介电最大值温度（Tm）随频率的变化服从 Vogel-Fulcher 关系。弛豫行为被认为源于 A 位的阳离子无序。在远高于 Tm 的温度下观察到收缩的铁电电滞回线。
引用
@article{arxiv.1112.2416,
title = {Relaxor ferroelectric behavior and structural aspects of SrNaBi2Nb3O12 ceramics},
author = {Sunil Kumar and D. A. Ochoa and J. E. Garcia and K. B. R. Varma},
journal= {arXiv preprint arXiv:1112.2416},
year = {2011}
}
备注
4 Figures, to be published in Journal of the American Ceramic Society