| 用柠檬酸溶胶凝胶法合成SrFeCo_(0.5)O_x氧化物 |
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| 引用本文： | 霍地,张劲松,杨洪才,曹小明.用柠檬酸溶胶凝胶法合成SrFeCo_(0.5)O_x氧化物[J].东北大学学报(自然科学版),2003,24(1):61-63. |
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| 作者姓名： | 霍地 张劲松 杨洪才 曹小明 |
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| 作者单位： | 1. 东北大学,材料与冶金学院,辽宁,沈阳,110004
2. 中国科学院,金属研究所,辽宁,沈阳,110014 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，G20000672001， |
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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·
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| 关 键 词： | 无机合成 溶胶凝胶 混合导体 氧化物 SrFeCo05Ox 晶体结构 |
| 文章编号： | 1005-3026(2003)01-0061-03 |
| 修稿时间： | 2002年5月28日 |
Synthesis of Complex Conducting Oxides SrFeCo0.5Ox by Citrates Sol-gel Method |
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| Huo,Di ,Zhang,Jin-Song ,Yang,Hong-Cai ,Cao,Xiao-Ming.Synthesis of Complex Conducting Oxides SrFeCo0.5Ox by Citrates Sol-gel Method[J].Journal of Northeastern University(Natural Science),2003,24(1):61-63. |
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| Authors: | Huo Di Zhang Jin-Song Yang Hong-Cai Cao Xiao-Ming |
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| Institution: | (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China; (2) Inst. of Metal Res., Chinese Acad. of Sci., Shenyang 110014, China |
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| 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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| Keywords: | inorganic synthesis sol-gel oxides mixed-conductor SrFeCo_(0 5)O_x crystal structure |
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