| 利用电子顺磁共振对掺Mn刚玉晶体中子辐照变价的研究 |
| |
| 引用本文： | 林理彬,张一云,卢铁城,林理忠.利用电子顺磁共振对掺Mn刚玉晶体中子辐照变价的研究[J].四川大学学报(自然科学版),1996(1). |
| |
| 作者姓名： | 林理彬 张一云 卢铁城 林理忠 |
| |
| 作者单位： | 四川联合大学辐射物理及技术开放实验室物理系，云南大学物理系 |
| |
| 基金项目： | 国家自然科学基金高校博士学科点专项科研基金 |
| |
| 摘 要： | 测量并对比了掺Ｍｎ刚玉晶体在中子辐照及退火处理前后的电子顺磁共振（ＥＰＲ）谱，结合紫外－可见光吸收谱的结果，发现Ｍｎ２＋和Ｍｎ４＋的浓度降低，而Ｍｎ３＋浓度增加，虽然Ｍｎ离子的掺杂浓度并无改变，但其价态由于中子辐照而引起了改变．实验结果还表明，中子辐照可在晶体内形成Ｍｎ２＋与Ｆ－心的复合体，但退火后则有一部分转化为Ｍｎ２＋与Ｆ心的复合体．
|
| 关 键 词： | 电子顺磁共振，掺Mn刚玉晶体，中子辐照变价 |
EPR SPECTRA USED TO RESEARCH THE NEUTRON IRRADIATION OF SAPPHIRE:Mn |
| |
| Lin Libin,Zhang Yiyun,Lu Tiecheng.EPR SPECTRA USED TO RESEARCH THE NEUTRON IRRADIATION OF SAPPHIRE:Mn[J].Journal of Sichuan University (Natural Science Edition),1996(1). |
| |
| Authors: | Lin Libin Zhang Yiyun Lu Tiecheng |
| |
| Abstract: | The EPR spetra of Mn doped sapphire measured before and after neutron irradiation as well as before and after annealing are reported.Tugetherwith as before and after annealing are reported.Together with the results of UV-VI absorption spectra can be found that aftet neutron irradiation the concentration of Mn2 and Mn4 decreased and Mn3 increased.This implied the change of valence variation after irradiation.In other respect,from EPR spectra authors also found that neutron irradiation induced compound centers which gathered Mn2 with nearest F- centers,but after annealing these centers transformed into other compound centers of Mn2 compel6d by F center. |
| |
| Keywords: | EPR sapphire:Mn neutron irradiation |
| 本文献已被 CNKI 等数据库收录！ |
