Accurate Determination of the Redox State in High‐Tc Superconductor Oxides
- 1 July 1988
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 27 (7) , 980-982
- https://doi.org/10.1002/anie.198809801
Abstract
The determination of the excess oxygen content in high‐Tc superconductors is especially important. The efficiency of two new methods by which δ is determined directly has been demonstrated using the prototypic semiconductor YBa2Cu3O6.5+δ. In one method the shift of the Fe2⊕/Fe3⊕ concentration ratio is determined, whereas in the other the O2‐pressure after reaction of the oxide ceramic with water is measured.Keywords
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