The effect of substituents on magnetic order and superconductivity in RuSr2R2-yCeyCu2O10+δ (R = Eu, Gd)

被引：3
作者：
Goh, S. K.
Williams, G. V. M.
Lee, H. K.
机构：
[1] Ind Res Ltd, MacDiarmid Inst Adv Mat & Nanotechnol, Lower Hutt, New Zealand
[2] Victoria Univ Wellington, Sch Chem & Phys Sci, Wellington, New Zealand
[3] Kangwon Natl Univ, Dept Phys, Chunchon 200701, South Korea
来源：
CURRENT APPLIED PHYSICS | 2006年 / 6卷 / 03期
关键词：
superconductivity; magnetism; ruthenates;
D O I：
10.1016/j.cap.2005.11.052
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have used the partial substitution of Cu by Zn and Ru by Sri to probe the normal, superconducting, and magnetic states in the superconducting and magnetically ordered ruthenocuprate RuSr2R2-yCeyCu2O10+delta (R = Eu, Gd). The effect of Zn substitution for Cu in the CuO2 planes is to suppress the superconducting transition temperature at a rate similar to that observed in other high temperature superconducting cuprates. Sri substitution for Ru rapidly suppresses the temperature where the ferromagnetic component is observed. This suppression rate depends on the Ce content. We observe that the temperature where the bulk Meissner phase commences is closer to the superconducting transition temperature when the ferromagnetic component is completely suppressed. This provides direct support for the spontaneous vortex phase model that has been applied to RuSr2Gd1.4Ce0.6Cu2O10+delta to account for coexisting magnetic and superconducting orders. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：515 / 519
页数：5
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