高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (10): 1509.

• 论文 • 上一篇    下一篇

高压后EuI2的结构及光谱性质研究

王林同1, 王世华2, 赵新华2, 孙继荣3   

  1. 1. 昌潍师范专科学校化学系, 潍坊, 261043;
    2. 北京师范大学化学系, 北京, 100875;
    3. 中国科学院物理研究所
  • 收稿日期:1995-09-04 出版日期:1996-10-24 发布日期:1996-10-24
  • 通讯作者: 王林同,男.31岁,硕士,讲师
  • 作者简介:王林同,男.31岁,硕士,讲师
  • 基金资助:

    国家自然科学基金;国家科委“八·五”攀登计划基金;中国科学院长春应用化学研究所稀土化学与物理开放实验室资助

Studies on Structure and Fluorescence Spectra of High-pressure-treated EuI2

WANG Lin-Tong1, WANG Shi-Hua2, ZHAO Xin-Hua2, SUN Ji-Rong3   

  1. 1. Department of Chemistry, Changwei Teachers'College, Weifang, 261043;
    2. Department of Chemistry, Beijing Normal University, Beijing;
    3. Institute of Physics, Academia Sinica, Beijing
  • Received:1995-09-04 Online:1996-10-24 Published:1996-10-24

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摘要： 研究了高压后EuI2的结构及光谱性质,发现高压后其结构由单斜转化为正交,对称性和Eu2+配位数均有增加,4f65d能级间距加大,能级重心降低,还讨论了发射光谱的红移现象,指认了新出现的449nm处的发射峰,并报道了EuI2新的正交结构(EuI2-V).

关键词: 高压, EuI2, 晶体结构, 荧光光谱

Abstract: The structure and fluorescence properties of high-pressure-reated EuI2 were studied.The structural change of EuI2 from monoclinic to orthorhombic and the increase of both structural symmetry and coordination number of Eu2+ were observed respectively.It was found that high-pressure treatment could split the energy levels of 4f65d and made the central energy levels lower so as to induce the red shift of emission spectra.Moreover,a new emission peak (449 nm) is assigned and a new phase(EuI2-Ⅴ) is reported.

Key words: High-pressure, EuI2, Crystal structure, Fluorescence spectra

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