高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (3): 437.

• 论文 • 上一篇    下一篇

铈卤氧化物的ESCA表征(Ⅱ)──Ce的M5N45N45俄歇峰

胡刚, 葛辽海, 孙桂芬   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1994-04-15 修回日期:1994-10-15 出版日期:1995-03-24 发布日期:1995-03-24
  • 通讯作者: 胡刚,男,52岁,副研究员.
  • 作者简介:胡刚,男,52岁,副研究员.
  • 基金资助:

    国家自然科学基金

Characterization of Oxides and Halogenides of Cerium by ESCA(Ⅱ)──Auger Peaks of CeM5N45N45

HU Gang, GE Liao-Hai, SUN Gui-Fen   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1994-04-15 Revised:1994-10-15 Online:1995-03-24 Published:1995-03-24

摘要: 研究了XPS诱导的CeM5N45N45俄歇峰,由于其终态空穴处于芯能级,故俄歇峰有较好的分辨率。从CeM5N45N45的俄歇峰可获得中心离子Ce的电子云密度等信息,发现其俄歇参数与配位体的极化变形程度有关,从而解释了双烯烃定向聚合必须有稀土卤氧键存在的原因。

关键词: X射线光电子能谱, 铈俄歇峰, 俄歇参数

Abstract: The larger chemical shift of cerium compounds was discoveried. The chemical states of the cerium compounds were identified by the chernical shifts of Auger energy. The changes in Auger energy and parameters are principally due to the changes in extra-atomic relaxation or polarization energy. The increase of the polarizable properties inanions of cerium compounds corresponds to the increase of Auger energy and parameter. The Auger parameter can be measured more accurately. Ce(CF3COO)xCl3-xwas also studied by ESCA. Itis shown that the electron density at cerium atom increases with the increase of x, while theelectron density at oxygen atom decreases.

Key words: XPS, Auger peaks of cerium, Auger parameter

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