中国物理B ›› 1999, Vol. 8 ›› Issue (9): 690-693.doi: 10.1088/1004-423X/8/9/008

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A STUDY ON SYNTHESIS OF La1-x SrxCrO3 BY SOL-GEL AND THEIR ELECTRICAL PROPERTIES

刘晓梅1, 杨敏1, 吕喆1, 裴力1, 刘江1, 苏文辉2   

  1. (1)Department of Physics, Jilin University, Changchun 130023, China; (2)Department of Physics, Jilin University, Changchun 130023, China; International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China
  • 收稿日期:1999-01-10 出版日期:1999-09-15 发布日期:1999-09-20
  • 基金资助:
    Project supported by the National Plan Commission of China (Grant No. 715-21-02) and the Doctoral Program Foundation of Institution of Higher Education of China (Grant No. 9118309).

A STUDY ON SYNTHESIS OF La1-x SrxCrO3 BY SOL-GEL AND THEIR ELECTRICAL PROPERTIES

Liu Xiao-mei (刘晓梅)a, Yang Min (杨敏)a, Lǜ Zhe (吕喆)a, Pei Li (裴力)a, Liu Jiang (刘江)a, Su Wen-hui (苏文辉)b   

  1. a Department of Physics, Jilin University, Changchun 130023, China; b International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China
  • Received:1999-01-10 Online:1999-09-15 Published:1999-09-20
  • Supported by:
    Project supported by the National Plan Commission of China (Grant No. 715-21-02) and the Doctoral Program Foundation of Institution of Higher Education of China (Grant No. 9118309).

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摘要： La1-x SrxCrO3 nanoparticles were prepared by the sol-gel method. The sintering temperature of the samples could be decreased to about 400 K. The crystal structures of La1-x SrxCrO3 at room temperature are all of the othorhombic perovskite GdFeO3-type (x≤0.4). And the electrical conductivity increases with x, but when x>0.3 it decreases. The higher the sintering temperature, the better the electrical conductivity, because the grain size of the examples increases with increasing sintering temperature.

Abstract: La1-x SrxCrO3 nanoparticles were prepared by the sol-gel method. The sintering temperature of the samples could be decreased to about 400 K. The crystal structures of La1-x SrxCrO3 at room temperature are all of the othorhombic perovskite GdFeO3-type (x≤0.4). And the electrical conductivity increases with x, but when x>0.3 it decreases. The higher the sintering temperature, the better the electrical conductivity, because the grain size of the examples increases with increasing sintering temperature.

中图分类号:  (Methods of micro- and nanofabrication and processing)

  • 81.16.-c
81.20.Fw (Sol-gel processing, precipitation) 61.66.Fn (Inorganic compounds) 72.80.Sk (Insulators) 61.46.Df (Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)) 81.20.Ev (Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)