Superconductivity and Magnetic Properties of High-Pressure Oxygen Synthesized Ru1−xSr2GdCu2+xO8-z Compounds
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ABSTRACTWe report on the new superconducting materials with the formula Ru1−xSr2GdCu2+xO8-z that have been synthesized under high-pressure oxygen conditions. By changing the ratio between Ru and Cu in the compound we were able to increase the temperature of the superconducting transition up to 72 K for x=0.3 and 0.4. Reentrant dependencies of the magnetization found at low temperatures are qualitatively explained assuming a quasi two-dimensional character of the superconducting regions. The magnetic characteristics of these compounds are discussed and compared to the existing data on RuSr2GdCu2O8 magnetic superconductor (Tcon=45K, TN=132 K).
1967 ◽
Vol 99
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pp. 895-899
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2010 ◽
Vol 447-448
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pp. 61-65
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1992 ◽
Vol 89
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pp. 221-228
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1964 ◽
Vol 13
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pp. 165-182
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1962 ◽
Vol 40
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pp. 51-56
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