Chemical doping and intergranular magnetic-field effects in bulk thallium-based superconductors
M. Yang, Y. H. Kao, Y. Xin, K. W. Wong
DOI 10.1103/PhysRevB.50.13653 · Physical Review B
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Abstract
Measurements of ac magnetic susceptibility of bulk Tl2Ba2Ca2Cu3Oy and compounds containing noble-metal additives were carried out to investigate the effects of chemical doping and penetration of magnetic field into the intergranular region. Significant enhancement of the intergranular critical current density was demonstrated in Tl-based ceramic superconductors with Au and Ag doping. Methods for convenient determination of the intergranular weak-link phase-locking temperature and average lower critical field in the bulk granular superconductors are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ba2Ca2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 120 | Pressure not reported | onset |
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