Superconductivity in Ru1-xSr2GdCu2+xO8-y compounds -: art. no. 224512

被引：77

作者：

Klamut, PW ^{[1
]}

Dabrowski, B ^{[1
]}

Kolesnik, S ^{[1
]}

Maxwell, M ^{[1
]}

Mais, J ^{[1
]}

机构：

[1] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 22期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1103/PhysRevB.63.224512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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(T-c=45 K) 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.

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