Crystal structures, magnetic and superconducting properties of the RuSr2NdCu2Ox and RuSr2GdCu2Oy compounds

被引：7
|
作者：
Vecchione, A
Gombos, M
Pace, S
Tedesco, C
Zola, D
机构：
[1] Univ Salerno, Dipartimento Fis ER Caianiello, Unita INFM Salerno, I-84081 Baronissi, Salerno, Italy
[2] Univ Salerno, Dipartimento Chim, I-84081 Baronissi, Italy
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 372卷 / PART 2期
关键词：
rutheno-cuprate materials; superconductivity; magnetization; X-ray powder diffraction;
D O I：
10.1016/S0921-4534(02)00979-6
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the magnetization and the susceptibility measurements of the RuSr2GdCu2Oy and RuSr2NdCu2Ox perovskite materials. We find that RuSr2GdCu2Oy compound exhibits a magnetic transition at T-n = 135 K followed by a superconducting one with an onset T-c = 35 K. Samples of RuSr2NdCu2O(x) material have shown neither a superconductivity nor a magnetic transition, XRD measurements show that in RuSr2NdCu2Ox the Nd ions tend to be substituted by Sr ions in very high percentages. The relevance of this phenomenon on the absence of superconductivity in RuSr2NdCu2Ox is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：1229 / 1231
页数：3
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