EELS investigations of different niobium oxide phases

被引：58
作者：
Bach, D.
Stoermer, H.
Schneider, R.
Gerthsen, D.
Verbeeck, J.
机构：
[1] Univ Karlsruhe, Lab Elektronenmikroskopie, D-76128 Karlsruhe, Germany
[2] Univ Antwerp, EMAT, B-2020 Antwerp, Belgium
来源：
MICROSCOPY AND MICROANALYSIS | 2006年 / 12卷 / 05期
关键词：
niobium monoxide; niobium pentoxide; EELS; ELNES; quantification; stoichiometry;
D O I：
10.1017/S1431927606060521
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electron energy loss spectra in conjunction with near-edge fine structures of purely stoichiometric niobium monoxide (NbO) and niobium pentoxide (Nb2O5) reference materials were recorded. The structures of the niobium oxide reference materials were checked by selected area electron diffraction to ensure a proper assignment of the fine structures. NbO and Nb2O5 show clearly different energy loss near-edge fine structures of the Nb-M-4,M-5 and -M-2,M-3 edges and of the O-K edge, reflecting the specific local environments of the ionized atoms. To distinguish the two oxides in a quantitative manner, the intensities under the Nb-M-4,M-5 as well as Nb-M-2,M-3 edges and the O-K edge were measured and their ratios calculated. k-factors were also derived from these measurements.
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收藏
页码：416 / 423
页数：8
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