Pressure effects on the intergrain coupling in (Tl0.5Pb0.5)(Ba0.2Sr0.8)2Ca2Cu3Oy ceramic superconductor

The effects of pressure and magnetic field on the onset of dissipation in a (Tl0.5Pb0.5)(Ba0.2Sr0.8)2Ca2Cu3Oy compound with optimum O content were studied. The temperature of the onset of dissipation (Ton) shifts to higher values with the applied pressure. The scaling of Ton with Tc(P) produces the...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2003-01, Vol.384 (1-2), p.102-110
Main Authors: González, J.L, de Mello, E.V.L, Yugue, E.S, Orlando, M.T.D, Baggio-Saitovitch, E
Format: Article
Language:English
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Summary:The effects of pressure and magnetic field on the onset of dissipation in a (Tl0.5Pb0.5)(Ba0.2Sr0.8)2Ca2Cu3Oy compound with optimum O content were studied. The temperature of the onset of dissipation (Ton) shifts to higher values with the applied pressure. The scaling of Ton with Tc(P) produces the overlapping of the H(ton) curves suggesting that the increase of Tc and the intergrain coupling have a common origin. The improvement of the superconducting gap was recognized as mainly responsible for the increase of the intergrain coupling (also Tc) with the pressure. The experimental findings are compared with other ones obtained on a Hg0.82Re0.18Ba2Ca2Cu3O8+d compound. 33 refs.
ISSN:0921-4534
DOI:10.1016/S0921-4534(02)01805-1