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Critical currents i...
Critical currents in Tl-2122 and Y-124 sinters under high hydrostatic pressure
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Diederichs, J. (författare)
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Reith, W. (författare)
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- Sundqvist, Bertil (författare)
- Umeå universitet,Institutionen för fysik
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Niska, John (författare)
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Easterling, Kenneth E. (författare)
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Schilling, James S. (författare)
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(creator_code:org_t)
- Bristol : Adam Hilger, 1991
- 1991
- Engelska.
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Ingår i: Superconductor Science and Technology, volume 4, Special Issue 1S. - Bristol : Adam Hilger. - 0750301082 ; , s. S97-S99
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Superconductors
- superconductivity
- high transition temperature superconductors
- Hi-Tc
- HTS
- sintered ceramic
- Tl-2122
- Y-124
- YBa2Cu4O8
- critical current density
- inductive measurements
- high pressure
- penetration depth
- critical temperature
- Condensed matter physics
- Kondenserade materiens fysik
- Superconductivity
- Supraledning
- fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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