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Oxygen diffusion and isotope exchange behaviour of Nd1+zBa2−zCu3Oy

✍ Scribed by A.A. Galkin; G.N. Mazo; S. Scheurell; E. Kemnitz

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
504 KB
Volume
101-103
Category
Article
ISSN
0167-2738

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✦ Synopsis

The oxygen diffusion and exchange behaviour of Nd, +* Ba,_,Cu,O, has been studied by analysing the reaction between the 123 phase and an "0 enriched gas phase. The oxygen mobility and isotope exchange activity of the cuprate depend on the number of vacancies in the CuO,-layers and the BET surface area of Nd, +L Ba,_,Cu,O, but not on the Nd/Ba ratio (z = 0, 0.1 and 0.2) of the solid solutions. It has been established that characteristic diffusion data (TOnSe,, diffusion rate etc.) are more sensitive to changes in the measuring conditions or in the properties of the samples than the results observed for the isotope exchange reactions.

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