Accurate Determination of the Redox State in High‐ T  c  Superconductor Oxides | Zendy

Maier J. | Zendy; Murugaraj P. | Zendy; Lange C. | Zendy; Rabenau A. | Zendy

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Accurate Determination of the Redox State in High‐ T c Superconductor Oxides

Author(s) -

Maier J.,

Murugaraj P.,

Lange C.,

Rabenau A.

Publication year - 1988

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.198809801

Subject(s) - superconductivity , redox , ceramic , oxygen , analytical chemistry (journal) , oxide , materials science , semiconductor , high temperature superconductivity , inorganic chemistry , oxygen pressure , chemistry , condensed matter physics , metallurgy , optoelectronics , physics , chromatography , organic chemistry

The determination of the excess oxygen content in high‐ T c superconductors is especially important. The efficiency of two new methods by which δ is determined directly has been demonstrated using the prototypic semiconductor YBa 2 Cu 3 O 6.5+δ . In one method the shift of the Fe 2⊕ /Fe 3⊕ concentration ratio is determined, whereas in the other the O 2 ‐pressure after reaction of the oxide ceramic with water is measured.

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