东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (1): 61-63.DOI: -

• 论著 • 上一篇    下一篇

用柠檬酸溶胶凝胶法合成SrFeCo_(0.5)O_x氧化物

霍地;张劲松;杨洪才;曹小明   

  1. 东北大学材料与冶金学院 ; 中国科学院金属研究所 ; 东北大学材料与冶金学院 ; 中国科学院金属研究所 辽宁沈阳　110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2003-01-15 发布日期:2013-06-23
  • 通讯作者: Huo, D.
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展规划"九七三"项目(G20000672001)·

Synthesis of complex conducting oxides SrFeCo0.5Ox by citrates sol-gel method

Huo, Di (1); Zhang, Jin-Song (2); Yang, Hong-Cai (1); Cao, Xiao-Ming (2)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China; (2) Inst. of Metal Res., Chinese Acad. of Sci., Shenyang 110014, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2003-01-15 Published:2013-06-23
  • Contact: Huo, D.
  • About author:-
  • Supported by:
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摘要： 采用柠檬酸溶胶凝胶法合成SrFeCo0 5Ox混合导体氧化物·利用XRD、TEM以及DTA方法研究与分析了不同条件下样品的晶体结构组成、相貌·确定了最佳制备条件·结果说明在燃料剂/氧化剂比例为0 64,550℃时得到单相钙钛矿氧化物,氧化物为纳米球形颗粒,尺寸分布均匀;加热温度升高850℃晶体结构无变化,颗粒尺寸明显长大但是形状不变·同时分析了溶胶凝胶反应过程及影响因素·

关键词: 无机合成, 溶胶凝胶, 混合导体, 氧化物, SrFeCo05Ox, 晶体结构

Abstract: Conducting oxides SrFeCo0.5Ox powder was prepared by nitrate sol-gel method. Thermal reaction of the gel during heating is investigated by DTA and the crystal structure and morphology of the calcined powder were characterized by x-ray diffraction (XRD) and transmission electron microscope (TEM) respectively. The results show that single perovskite oxide can be formed at 550°C with x=0.64. The oxide size particle is in nanometer grade and very uniform. As the calcined temperature increases up to 850°C, the phase of the sample still does not change but the particles size becomes 100 nm. The polymerization reaction of nitrates sol-gel is also discussed.

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