| ZnS:Ag的ESR及结构相变研究 |
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| 引用本文： | 侯碧辉,眭云霞.ZnS:Ag的ESR及结构相变研究[J].波谱学杂志,1996,13(3):277-282. |
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| 作者姓名： | 侯碧辉 眭云霞 |
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| 作者单位： | 1. 中国科学技术大学物理系;2. 结构分析开放实验室, 合肥 230026;3. 南京大学现代分析中心, 南京 210008 |
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| 摘 要： | ESR实验表明Ag在ZnS微晶中是以Ag+离子的形式存在,没有测到Ag2+离子的信号.以Mn2+为探针的ESR和X射线衍射分析研究发现,在ZnS微晶由立方点阵(β相)变为六角点阵(α相)的结构相变中,Ag+离子对相变的影响与掺杂浓度和煅烧温度有关,当掺Ag量为5×10-4g/g时相变在1100~1200℃出现逆转现象.由Mn2+的ESR谱得出α相的朗德因子g为2.006,越精细常数a为6.76mT,β相的g为2.002,a为6.81mT.
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| 关 键 词： | ZnS:Ag微晶 Mn2+的ESR 结构相交 相交逆转 |
| 收稿时间： | 1995-07-07 |
STUDY ON ESR AND STRUCTURE PHASE TRANSFORMATION IN ZnS: Ag |
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| Hou Bihui, Sui Yunxia, Han Shiyin, Li Bilin and Guo Changxin.STUDY ON ESR AND STRUCTURE PHASE TRANSFORMATION IN ZnS: Ag[J].Chinese Journal of Magnetic Resonance,1996,13(3):277-282. |
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| Authors: | Hou Bihui Sui Yunxia Han Shiyin Li Bilin and Guo Changxin |
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| Institution: | 1. Department of Physics;Structure Research Laboratory, University of Science and Technology of China, Hefei 230026;2. Modern Analysis Center, Nanjing University, Nanjing 210008 |
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| Abstract: | It was found with electron-spin-resonance(ESR) that the doped silver is Ag+,and no ESR signal or Ag2+ was observed in ZnS crystallite. With ESR of probe ion Mn2+ and X-ray diffraction analysis, it was found that a structure phase transformation from cubic lattice(β phase) to hexagonal(α phase) in ZnS crystallite is affectd by doped amount of Ag+ ion and calcination temperature. There is a reverse transformation phenomenon when Ag+ doped amount is 5×10-4g/g and at 1100℃-1200℃.The Landé factor g of α phase is 2.006,the hyperfine constant a is 6.76mT,the g of β is 2.002,a is 6.81 mT from ESR of the Mn2+. |
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| Keywords: | Zns:Ag crystallite ESR of Mn2+ Structure phase transformation Reversed transformation |
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