高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (11): 1639.

• 研究快报 • 上一篇    下一篇

类钙钛矿结构新钽酸盐KSr2Ta3O10的合成、结构与层间特性

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, 武汉 430070
  • 收稿日期:2000-07-13 出版日期:2000-11-24 发布日期:2000-11-24
  • 通讯作者: 方 亮(1970年出生),男,博士,副研究员,从事无机材料合成、吸波材料、电磁流变材料的研究.
  • 基金资助:

    国家自然科学基金(批准号:29905004);美国国际衍射数据中心(ICDD)Grant-in-Aid基金(No.98-10)资助

Synthesis, Structure and Interlayer Behavior of A New Tantalate KSr2Ta3O10 with Perovskite-like Structure

FANG Liang, ZHANG Hui, WU Bo-Lin, YUAN Run-Zhang   

  1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
  • Received:2000-07-13 Online:2000-11-24 Published:2000-11-24

关键词: 钽酸盐, 类钙钛矿结构, 插层

Abstract: A new tantalate compound KSr2Ta3O10 was synthesized by solid state reaction for the first time in the ternary system K2O SrO Ta2O5, and its single crystals were prepared using flux method. The chemical compositions, crystal structure, optical property, density and melting point of the new compound were characterized by EPMA, XRD, DTA and so on. KSr2Ta3O10 crystallizes the orthorhombic system with unit cell parameters a= 0.784 4(1) nm, b =0.777 0(1) nm, c =3.012 7(1) nm and space group P212121, Z =8. The structure may be described as treble perovskite sheets [KSr2Ta3O10]- interleaved with K+. Further, it was found that KSr2Ta3O10 has intercalation phenomenon. Na+, Li+, H+, NH4+could exchange the interlayer cations K+ of KSr2Ta3O10 , and n hexylamine also could intercalate into the place between the layers of [KSr2Ta3O10]-.

Key words: Tantalate, Perovskite-like structure, Intercalation

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