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Kinetic, conductivity and ESR studies of superconducting Y−Ba−Cu−O ceramics with controlled oxygen content

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Abstract

The activation energy Ea of oxygen evolution from the YBa2Cu3O7−/gs ceramics has been measured for σ ranging from 0 to 0.2. In the σ range from 0.15 to 0.18 oxygen is fairly homogeneous and its evolution is characterized by Ea=(36±3) kcal/mol. Temperature dependence of a low-field ESR signal of the ceramics have been studied at a frequency of 9.3 KHz nearby TC.

Abstract

Измерена энергия активации Ea выхода кислорода из керамики YBa2Cu3O7-δ для значений δ от 0 до 0,2. Показано, что в интервале δ от 0,006 до 0,15–0,18 кислород достаточно однороден и характеризуется Ea=(36±3) ккал/моль. Изучены температурные зависимости низкополевого сигнала ЭПР этих керамик на частоте 9,3 КГц вблизи Tc.

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Authors and Affiliations

  1. Institute of Catalysis, 630090, Novosibirsk, USSR

    V. A. Bolshov, A. M. Volodin, A. S. Kharitonov, G. I. Panov, V. F. Yudanov & V. N. Parmon

  2. Institute of Inorganic Chemistry, 630090, Novosibirsk, USSR

    V. G. Martynets, E. V. Matizen & V. F. Kukarin

Authors
  1. V. A. Bolshov
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  2. A. M. Volodin
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  3. A. S. Kharitonov
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  4. G. I. Panov
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  5. V. F. Yudanov
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  6. V. N. Parmon
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  7. V. G. Martynets
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  8. E. V. Matizen
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  9. V. F. Kukarin
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Bolshov, V.A., Volodin, A.M., Kharitonov, A.S. et al. Kinetic, conductivity and ESR studies of superconducting Y−Ba−Cu−O ceramics with controlled oxygen content. React Kinet Catal Lett 39, 411–417 (1989). https://doi.org/10.1007/BF02071361

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  • DOI: https://doi.org/10.1007/BF02071361

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