Determination of the complete stoichiometry of Bi-Pb-Sr-Ca-Cu-O-superconductors

Autor: Y. N. Badun, S. Y. Kasin, S. W. Naumov, G. N. Maso, S. Scheurell, Erhard Kemnitz
Rok vydání: 1991
Předmět:
Zdroj: Fresenius' Journal of Analytical Chemistry. 340:353-356
ISSN: 1618-2650
0937-0633
Popis: A convenient analytical method based on complexometric and iodometric titration for determining the complete stoichiometry of Bi-Pb-Sr-Ca-Cu-O-superconductors (PBSCCO) has been developed. It is shown that the individual contents of Cu3+, Bi5+, Pb4+ are not required for calculating the oxygen content of such materials. It turned out that the lead content and the oxygen content of sintered samples are much lower than those of calcined powders.
Databáze: OpenAIRE