Direct Measurement of the Cu Oxidation Number of Cuprate Superconductor Ceramics
1991
The Cu oxidation number in YBa2Cu3O7 has been measured directly by soft X-ray fluorescent spectroscopy both at room temperature and at liquid N2 temperature. The measurements are based on a calibration curve from different Ba-O compounds. The effect of changes in oxidation number above and below the transition temperature and its role in highTc superconductivity are discussed.
Keywords:
- Transition metal
- Spectroscopy
- Physics
- Nuclear magnetic resonance
- Transition temperature
- Ceramic
- Superconductivity
- Valence (chemistry)
- Electrical resistivity and conductivity
- Fluorescence spectroscopy
- Inorganic chemistry
- Liquid nitrogen
- High-temperature superconductivity
- Condensed matter physics
- Analytical chemistry
- Correction
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- Cite
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