Ca、Bi掺杂Ba0.67Sr0.33TiO3陶瓷弛豫特性研究

Ferroelectric Relaxor Behaviour of Ca、Bi Doped Ba0.67Sr0.33TiO3 Ceramics

中文关键词:  Ba_0.67Sr_0.33TiO₃陶瓷  掺杂  铁电弛豫

英文关键词:Ba_0.67Sr_0.33TiO₃ ceramics  doping  ferroelectric relaxor

中文摘要:

      通过低成本固相法制备了Ca、Bi掺杂Ba_0.67Sr_0.33TiO₃陶瓷.利用透射电子显微镜（TEM）和阻抗分析仪分析技术，详细研究了Ca、Bi掺杂Ba_0.67Sr_0.33TiO₃陶瓷的弛豫特性.研究发现Ca、Bi掺杂使BST陶瓷呈现显著的铁电弛豫行为，且随着掺杂量的增加，介电峰弥散程度和弛豫强度逐渐增强.

英文摘要:

      Ca、Bi doped Ba_0.67Sr_0.33TiO₃ ceramics were prepared using the lowcost solid phase method. The relaxor characteristics have been investigated by TEM and complex impedance spectroscopy analysis. The results showed that Ba_0.67Sr_0.33TiO₃ ceramics exhibit distinct ferroelectric relaxor behaviors by doping Ca、Bi, and with the increase of Ca、Bi content, the diffusion of the dielectric peak and the degree of relaxor characteristics also increased.