Superconductivity and its pressure dependence in the Pb-doped Tl-Ba-Ca-Cu-O superconductors
Lin Mingzhu, Tang Weihua, Meng Xianren, Lin Zhenjin, Han Wei, Tu Qingyun, Ren Yanru, Liu Zhenxing
DOI 10.1103/PhysRevB.41.2517 · Physical Review B
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Abstract
Pb-doped Tl-Ba-Ca-Cu-O compounds with nominal composition TlPbxBaCa3Cu3Oy have been sintered, and their physical properties have been studied. It is found that the superconducting transition temperature of the samples drops with the increase of x. The crystal structure is tetragonal, and the lattice constants reduce with Pb content. Precipitated phases are also present in the Pb-doped samples. The pressure dependence of Tc for the Pb-doped samples has also been studied. It is found that Tc increases with pressure at a rate of dTcR=0/dP=0.22 K/kbar for x=0.5, a higher rate than the dTcR=0/dP=0.18 K/kbar for pure Tl-Ba-Ca-Cu-O.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| TlBaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 123.4 | Pressure not reported | onset |
| TlBaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 119.4 | Pressure not reported | zero_resistance |
| TlPb0.05BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 119.5 | Pressure not reported | onset |
| TlPb0.05BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 115.2 | Pressure not reported | zero_resistance |
| TlPb0.1BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 118.4 | Pressure not reported | onset |
| TlPb0.1BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 112.5 | Pressure not reported | zero_resistance |
| TlPb0.3BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 115.5 | Pressure not reported | onset |
| TlPb0.3BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 104.6 | Pressure not reported | zero_resistance |
| TlPb0.5BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 110.6 | Pressure not reported | onset |
| TlPb0.5BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 96.8 | Pressure not reported | zero_resistance |
| TlPb0.7BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 108.6 | Pressure not reported | onset |
| TlPb0.7BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93.8 | Pressure not reported | zero_resistance |
| TlPb0.8BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 108 | Pressure not reported | onset |
| TlPb0.8BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90.9 | Pressure not reported | zero_resistance |
| TlPb0.9BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 107 | Pressure not reported | onset |
| TlPb0.9BaCa3Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | zero_resistance |
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