物理化学学报 >> 2001, Vol. 17 >> Issue (05): 457-459.doi: 10.3866/PKU.WHXB20010516

研究简报 上一篇    下一篇

铌酸盐Ba3NaBiNb10O30的结构与介电特性

方亮;张辉;吴伯麟;袁润章   

  1. 武汉理工大学 材料复合新技术国家重点实验室,湖北 武汉 430070
  • 收稿日期:2000-08-08 修回日期:2000-12-03 发布日期:2001-05-15
  • 通讯作者: 方亮 E-mail:fangliang001@263.net

Structural and Dielectric Properties of a Niobate Ba3NaBiNb10O30

Fang Liang;Zhang Hui;Wu Bo-Lin;Yuan Run-Zhang   

  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070
  • Received:2000-08-08 Revised:2000-12-03 Published:2001-05-15
  • Contact: Fang Liang E-mail:fangliang001@263.net

关键词: 铌酸盐, X射线衍射, 钨青铜结构, 介电特性, 铁电相

Abstract: A niobate was synthesized by doping Bi3+ in the ternary system BaONa2ONb2O5. The crystal structure was determined by Xray powder diffraction,and it belongs to tetragonal tungsten bronze structure at room temperature with unit cell parameters a=1.24777 (2) nm,c=0.39266(1) nm, = = =90 .Measurements of dielectric properties indicate that phase transitions of Ba3NaBiNb10O30 from paraelectric to ferroelectric occurs at 400℃,which is lower than that of Ba2NaNb5O30.

Key words: Niobate, Tungsten bronze structure, XRD, Dielectric property, Ferroelectric phase