应用化学 ›› 1996, Vol. 0 ›› Issue (6): 46-48.

• 研究简报 • 上一篇    下一篇

铬离子取代对LaGa1-xCrxO3性质的影响

杨健美, 苏锵   

  1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室 长春 130022
  • 收稿日期:1996-03-05 修回日期:1996-06-11 出版日期:1996-12-10 发布日期:1996-12-10
  • 基金资助:
    国家科委攀登计划

Effect of Substitution of Chromium Ion on the Properties of LaGa1-xCrxO3

Yang Jianmei, Su Qiang   

  1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1996-03-05 Revised:1996-06-11 Published:1996-12-10 Online:1996-12-10

摘要: 含过渡元素的ABO3型复合氧化物的许多性质都与B离子的种类及B-O键的性质有关,特别是电性与磁性主要取决于B-O键的强弱及B-O-B离子间相互作用的强弱.

关键词: 铬离子, 取代, LaGa1-xCrxO3, 镓酸镧, 稀土化合物

Abstract: LaGa1-xCrxO3(x=0,0.2,0.4,0.6,0.8,1.0) were synthesized by solid state reaction for the first time. The effects of chromium ion substitution on the structure,IR spectra,electric properties and magnetic properties of LaGa1-xCrxO3 were investigated.Some regularities of changes were obtained.The results show that Cr3+ enters into lattice and induces the lattice distortion of compounds.The Ga-O stretching vibrations and O-Ga-O deformation vibrations are shifted to high frequencies after substitution of Cr3+ for Ga3+.The resistivity decreases and susceptibility increases as the concentration of Cr3+ increases.

Key words: chromium ion, substitution, LaGa1-xCrxO3, lanthanum gallate, RE compound