高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (12): 2322.

• 研究论文 • 上一篇    下一篇

Al掺杂对尖晶石型Li[Mn(Al)]2O4结构的影响

宫杰1,2,3, 杨景海1,2, 王春忠1, 魏英进1, 宗占国2, 陈岗1   

  1. 1. 吉林大学材料科学与工程学院, 长春130023;
    2. 吉林师范大学凝聚态物理研究所, 四平136000;
    3. 中国科学院长春光学精密机械与物理研究所, 长春130021
  • 收稿日期:2001-10-19 出版日期:2002-12-24 发布日期:2002-12-24
  • 通讯作者: 宫　杰(1964年出生),男,博士,副教授,从事功能材料物理研究.
  • 基金资助:

    教育部博士学科点基金(批准号:20010183031)资助

Effects of Al Doping on the Spinel Structure of Li2O4

GONG Jie1,2,3, YANG Jing-Hai1,2, WANG Chun-Zhong1, WEI Ying-Jin1, ZONG Zhan-Guo2, CHEN Gang1   

  1. 1. College of Materials Science and Engineering, Jilin University, Changchun 130023, China;
    2. Institute of Solid States Physics, Jilin Normal University, Siping 136000, China;
    3. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2001-10-19 Online:2002-12-24 Published:2002-12-24

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摘要： 采用共沉淀法按不同Al掺杂比例x[x=n(Al)∶n(Mn+Al)=0,0.025,0.050,0.100,0.150,0.200]制得了Al(OH)3和Mn3O4混合物,将其与LiNO3按一定比例混合,在空气中于700℃烧结得Li[Mn(Al)]2O4样品.X射线衍射和Raman光谱结果表明,在0≤x≤0.20范围内均得到了单相的尖晶石型样品,随着x的增加,晶胞参数减小,晶格振动能量增加,Mn(Al)—O的结合增强,结构稳定性增强.

关键词: 尖晶石型结构, 晶格振动, 结合能

Abstract: The mixtures of Al(OH)3 and Mn3O4 with different molar ratios, x[x=n(Al)∶n(Mn+Al)=0, 0.025, 0.050, 0.10, 0.150, 0.20] were prepared by the coprecipitation method. The mixtures were sintered at 700 ℃ after mixed with LiNO3. The XRD and Raman results show that the mixtures are the single phase spinel Li[Mn(Al)]2O4 with Al content, x, between 0 and 0.20. The crystal parameter decreases, the lattice vibration energy increases, the bond of Mn(Al)-O becomes stronger, and the structure stability is enhanced when Al content increases.

Key words: Spinel structure, Lattice vibration, Combination energy

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