Superconductivity in Ru1−xSr2GdCu2+xO8−y compounds
P. W. Klamut, B. Dabrowski, S. Kolesnik, M. Maxwell, J. Mais
DOI 10.1103/PhysRevB.63.224512 · Physical Review B
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Abstract
We report on the properties of new ruthenocuprates Ru1−xSr2GdCu2+xO8−y (x=0, 0.1, 0.2, 0.3, 0.4, and 0.75) that extend the superconductivity found previously in RuSr2GdCu2O8(Tc=45K) to the solid solution with varied Ru/Cu ratios. The compounds have been synthesized in a high-pressure oxygen atmosphere. The maximum temperature of the superconducting transition is 72 K for the x=0.3 and 0.4 compositions. The reported behavior of magnetization at low temperatures can be qualitatively explained assuming a quasi-two-dimensional character of the superconducting regions in the compounds studied.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| RuSr2GdCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 45 | Pressure not reported | onset |
| Ru1-xSr2GdCu2+xO8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 72 | Pressure not reported | onset |
| RuSr2GdCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 45 | Pressure not reported | onset |
| Ru0.9Sr2GdCu2.1O8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 65 | Pressure not reported | onset |
| Ru0.8Sr2GdCu2.2O8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 70 | Pressure not reported | onset |
| Ru0.7Sr2GdCu2.3O8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 72 | Pressure not reported | onset |
| Ru0.6Sr2GdCu2.4O8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 72 | Pressure not reported | onset |
| Ru0.25Sr2GdCu2.75O8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 62 | Pressure not reported | onset |
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