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Light element analysis in oxycarbonate superconductors using EELS.
- Source :
-
Journal of electron microscopy [J Electron Microsc (Tokyo)] 2001; Vol. 50 (4), pp. 307-10. - Publication Year :
- 2001
-
Abstract
- Elemental analysis in an oxycarbonate superconductor ((Cu,N,C)Sr2CaCu2Oy) is conducted using transmission electron microscope-electron energy-loss spectroscopy with detector-gain correction. The gain correction enables highly sensitive elemental analysis and precise measurement of energy-loss near edge structures (ELNESs). It is found that carbon is included as a CO3 group, because the carbon K-edge in the oxycarbonate shows the same ELNES observed from CaCO3. Nitrogen ELNES is similar to that of Sr(NO3)2, so nitrogen is contained as a NO3 group. Although both CO3(2-) and NO3- have similar planar atomic arrangements, the nitrogen ELNES observed is different from that of carbon. EEL spectrum simulation based on DV-Xalpha method is used to interpret the difference.
Details
- Language :
- English
- ISSN :
- 0022-0744
- Volume :
- 50
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of electron microscopy
- Publication Type :
- Academic Journal
- Accession number :
- 11592675
- Full Text :
- https://doi.org/10.1093/jmicro/50.4.307