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

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (3): 437.

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

HU Gang, GE Liao-Hai, SUN Gui-Fen

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

Abstract

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)_xCl_3-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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HU Gang, GE Liao-Hai, SUN Gui-Fen . Characterization of Oxides and Halogenides of Cerium by ESCA(Ⅱ)──Auger Peaks of CeM₅N₄₅N₄₅[J]. Chem. J. Chinese Universities, 1995, 16(3): 437.

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

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