Physical properties and high-temperature phase analyses in magnetic high-Tc superconductor RuSr2RE2-xCexCu2O10

被引：4

作者：

Watanabe, M ^{[1
]}

Hai, DP ^{[1
]}

Kakeya, I ^{[1
]}

Kadowaki, K ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Sci Mat, Tsukuba, Ibaraki 3058573, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 359卷

关键词：

RuSr2Sm1.4Ce0.6Cu2O10 (; substitution; superconductivity; ferromagnetism; phase analysis;

D O I：

10.1016/j.physb.2005.01.088

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The crystal structure and the superconducting and ferromagnetic properties of Ru1-xMxSr Sm1.4Ce0.6Cu2O10 (M = Nb, Rh and Cu) polycrystalline samples were investigated. For the whole range of Nb substitution, x = 0-1, all samples were found to be superconducting with T-c((onset)) = 20-47 K and T-c(R=0) = 10-32 K. In contrast, Rh and Cu substitutions drastically suppress superconductivity. The increase of H-c1 with increasing Nb concentration suggests that the correlation between superconductivity and ferromagnetism exists in Ru1222. From the results of high-temperature phase analysis, the decomposition is found to occur at T-m = 1129 degrees C, where RuSr2GdOx and (Gd,Ce)O-y and (Sr,Gd,Cu)O-z are incongruently formed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：433 / 435

页数：3

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