Improved method for the determination of the oxygen content in YBa2Cu3O7 –δ
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 1 (5) , 863-866
- https://doi.org/10.1039/jm9910100863
Abstract
An improved description of the iodometric titration method for the accurate measurement of the oxygen deficiency δ in YBa2Cu3O7 –δ is presented. The crucial amendments to the methods originally published involve better control of the pH and a strict control of the sample dissolution. These improvements lead to an accuracy of better than ±0.01 in δ and show excellent correlation with data obtained from thermal analysis in a reducing atmosphere on a series of superconducting and non-superconducting ceramics exhibiting a large variation in oxygen stoichiometry.Keywords
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