高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (8): 663.

• 研究快报 • 上一篇    下一篇

稀土焦绿石化合物Er-2Fe4/3W2/3O7的高温高压多形转变

千正男1, 崔硕景1, 王一峰1, 苏文辉1, 王德涌1, 闫学伟2, 杜有茹2, 倪加缵2   

  1. 1. 吉林大学物理系;
    2. 中国科学院长春应用化学研究所
  • 收稿日期:1986-02-27 出版日期:1986-08-24 发布日期:1986-08-24
  • 基金资助:

    中国科学院科学基金

The Polymorphic Transformation for the Compound Er2Fe4/3 W2/3 O7 of Rare Earth-Pyrochlore Structure Under High Pressure and High Temperature

Qian Zhengnan1, Cui Shuojing1, Wang Yifeng1, Su Wenhui1, Wang Deyong1, Yan Xuewei2, Du Youru2, Ni Jiazan2   

  1. 1. The Teaching and Research Group of Solid State Physios, Jilin Univ.Changchun;
    2. Changchun Institute of Applied Chemistry, Academia Sitica, Ghangchun
  • Received:1986-02-27 Online:1986-08-24 Published:1986-08-24

摘要: F.Basile和M.A.Subramanian等人在常压高温下合成出变形的焦绿石化合物Er2Fe4/3W2/3O7,并用X射线粉末衍射法定出其结构属六方晶系。但对这种化合物的高温高压结构研究未见文献报导。我们在高压高温下进行了这种化合物的多形转变的研究。

Abstract: The polymorphic transformation of the compound Er2Fe4/3 W2/3O7 with hexagonal pyrochlore structure has been studied by high pressure and high temperature.It is found that the compound Er22Fe4/3 W2/3O7 has a phase transition from hexagonal to triclinic structure at 4.0GPa and 1200℃.Under this synthetic condition,the products of both synthesized directly from the mixture (Ⅰ) and from those hexagonal Er2Fe4/3 W2/3O7 (Ⅰ) have the same structures ( triclinic).

TrendMD: