ZnS:Ag的ESR及结构相变研究

波谱学杂志 ›› 1996, Vol. 13 ›› Issue (3): 277-282.

ZnS:Ag的ESR及结构相变研究

候碧辉¹, 眭云霞³, 韩世莹³, 李碧琳², 郭常新¹

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

收稿日期:1995-07-07 修回日期:1995-11-16 出版日期:1996-06-05 发布日期:2018-01-17

STUDY ON ESR AND STRUCTURE PHASE TRANSFORMATION IN ZnS:Ag

Hou Bihui¹, Sui Yunxia³, Han Shiyin³, Li Bilin², Guo Changxin¹

1. Department of Physics;Structure Research Laboratory, University of Science and Technology of China, Hefei 230026;
2. Modern Analysis Center, Nanjing University, Nanjing 210008

Received:1995-07-07 Revised:1995-11-16 Online:1996-06-05 Published:2018-01-17

摘要/Abstract

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.

关键词: ZnS:Ag微晶, Mn²⁺的ESR, 结构相交, 相交逆转

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⁺.

Key words: Zns:Ag crystallite, ESR of Mn²⁺, Structure phase transformation, Reversed transformation

候碧辉, 眭云霞, 韩世莹, 李碧琳, 郭常新. ZnS:Ag的ESR及结构相变研究[J]. 波谱学杂志, 1996, 13(3): 277-282.

Hou Bihui, Sui Yunxia, Han Shiyin, Li Bilin, Guo Changxin. STUDY ON ESR AND STRUCTURE PHASE TRANSFORMATION IN ZnS:Ag[J]. Chinese Journal of Magnetic Resonance, 1996, 13(3): 277-282.