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Oxygen absorption kinetics in YBa2Cu3Ox |
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| Authors: | Z -G Fan Y -X Zhuang G Yang R Shao and G -F Zhang |
| Affiliation: | P.O. Box 119, Northeastern University, Shenyang 110006, China |
| Abstract: | The oxygen absorption process in highly aligned YBa2Cu3Ox samples in air and in pure oxygen was studied at several constant temperatures. The process can be expressed in two steps, a chemical reaction controlled step and a diffusion controlled step. The kinetic equations are as follows respectively: (1 − at) ln(1 − at) + at = kDt The activation energy was calculated using an Arrhenius equation. The technical conditions of heat treatment for oxygen absorption of highly aligned YBa2Cu3Ox crystals are discussed. |
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