| Ln0.567Li0.3MnO4(Ln:稀土)的溶胶-凝胶法合成及其电性质 |
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| 引用本文： | 陈书阳,吕全建,蒋涛,冯亚南,蒋凯. Ln0.567Li0.3MnO4(Ln:稀土)的溶胶-凝胶法合成及其电性质[J]. 河南师范大学学报(自然科学版), 2007, 35(3): 180-182 |
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| 作者姓名： | 陈书阳 吕全建 蒋涛 冯亚南 蒋凯 |
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| 作者单位： | 南阳师范学院,化学系,河南,南阳,473061;郑州牧业工程高等专科学校,郑州,450011;河南师范大学,化学与环境科学学院,河南,新乡,453007 |
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| 基金项目： | 国家自然科学基金 , 南阳师范学院高层次人才科研启动费资助项目 |
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| 摘 要： | 采用溶胶-凝胶法合成了Ln0.567Li0.3MnO4(Ln:La,Nd,Gd,Dy,Ho)系列化合物,随着Ln3+半径的增加,晶胞参数a,c以及c/a值增大,室温下Ln0.567Li0.3MnO4电导率增大.与固相法合成相比,合成温度低了近200℃,可以有效减少锂和钼在高温合成中的挥发,室温电导率提高了一个数量级(10-6S.cm-1到10-5S.cm-1).
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| 关 键 词： | 稀土钼酸盐 溶胶-凝胶法 离子导电性 |
| 文章编号： | 1000-2367（2007）03-0180-03 |
| 修稿时间： | 2007-03-14 |
Syntheses by Sol-gel Methods and Conductivities of Ln0.567Li0.3MO4 |
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| CHEN Shu-yang,LV Quan-jian,JIANG Tao,FENG Ya-nan,JIANG Kai. Syntheses by Sol-gel Methods and Conductivities of Ln0.567Li0.3MO4[J]. Journal of Henan Normal University(Natural Science), 2007, 35(3): 180-182 |
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| Authors: | CHEN Shu-yang LV Quan-jian JIANG Tao FENG Ya-nan JIANG Kai |
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| Abstract: | In this paper,a series compounds,Ln0.567Li0.3MnO4(Ln:La,Nd,Gd,Dy,Ho),were synthesized by sol-gel methods.The cell parameters a,c,values of c/a and the conductivties at room temperature increase with the increasing of radius of Ln3+.The synthesis temperature by the sol-gel methods was about 200 ℃ lower than by the solid state reaction methods.The vaporizing of the lithium and molybdenum were effectively dereased in the process of synthesis at the high temperature,too.The conductivities of the samples prepared by the sol-gel methods were one quantity class higher than that by the solid state reaction methods(From 10-6 S·cm-1to 10-5 S·cm-1). |
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| Keywords: | rare earth molybdate sol-gel methods ionic conductivitiy |
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