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PAC studies of hyperfine interactions of181Ta in YBa2Cu3O7-δ and of140Ce in La2CuO4 and La1.85Sr0.15CuO4

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Abstract

Results of TDPAC studies of hyperfine interaction in high temperature superconducting ceramics are reported. The γ-ray cascade of 329–487 keV in140Ce excited in the decay of140La in La2-xSrxCuO4 samples (x=0 and 0.15), and 133–482 keV cascade in181Ta excited in the decay of181Hf in YBa2Cu3O7-δ samples were used. The procedure of introducing radioactive181Hf into the ceramics is described and indirect evidence for the occupation of Cu sites by the181Hf-181Ta probe is presented.

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Authors and Affiliations

  1. Institute of Nuclear Physics, Moscow State University, 117234, Moscow, USSR

    Z. Z. Akselrod, B. A. Komissarova, L. N. Kryukova, G. K. Ryasny, A. A. Sorokin & L. G. Shpin’kova

  2. Institute of Crystallography, Academy of Sciences of the USSR, Leninskii Pr. 59, 117333, Moscow, USSR

    G. A. Denisenko

Authors
  1. Z. Z. Akselrod
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  2. G. A. Denisenko
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  3. B. A. Komissarova
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  4. L. N. Kryukova
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  5. G. K. Ryasny
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  6. A. A. Sorokin
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  7. L. G. Shpin’kova
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Akselrod, Z.Z., Denisenko, G.A., Komissarova, B.A. et al. PAC studies of hyperfine interactions of181Ta in YBa2Cu3O7-δ and of140Ce in La2CuO4 and La1.85Sr0.15CuO4 . Hyperfine Interact 61, 1147–1150 (1990). https://doi.org/10.1007/BF02407592

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  • DOI: https://doi.org/10.1007/BF02407592

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