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  • Diederichs, J., et al. (author)
  • Critical currents in Tl-2122 and Y-124 sinters under high hydrostatic pressure
  • 1991
  • In: Superconductor Science and Technology, volume 4, Special Issue 1S. - Bristol : Adam Hilger. - 0750301082 ; , s. S97-S99
  • Conference paper (peer-reviewed)abstract
    • Utilizing AC susceptibility measurements the authors have investigated the inter and intragranular properties of selected bulk materials under hydrostatic pressures to 3.5 GPa. A single phase Tl2CaBa2Cu2O8 sample with superconducting transition temperature Tc approximately=107 K shows a clear maximum in Tc(P) at approximately 2.2 GPa coupled with a nearly twofold increase to 3 GPa of the intergranular critical current density JcJ near Tc. The second sample, a YBa2Cu4O8 sinter, shows a large linear increase in Tc with pressure (+5.5 K/GPa) as well as a fivefold increase JcJ to 3 GPa. Applying a critical state model, the authors find that Tc(P) varies as lambda g-2(P), where lambda g is the intragranular (London) penetration depth.
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  • Result 1-1 of 1
Type of publication
conference paper (1)
Type of content
peer-reviewed (1)
Author/Editor
Sundqvist, Bertil (1)
Easterling, Kenneth ... (1)
Niska, John (1)
Diederichs, J. (1)
Reith, W. (1)
Schilling, James S. (1)
University
Umeå University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
1991 (1)

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