Superconducting properties of textured (LREI0.33Eu0.33Gd0.33)Ba2Cu3Oy (LREI = Nd, Sm) processed by OCMG

被引：1
|
作者：
Giovannelli, F
Noudem, J
Ubaldini, A
Monot-Laffez, I
机构：
[1] CNRS, CRISMAT Lab, UMR 6508, F-14050 Caen, France
[2] CEA, CNRS, LEMA, FRE 2077, F-41029 Blois, France
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2003年 / 104卷 / 03期
关键词：
bulk superconductors; OCMG process; (LRE)BaCuO; transport properties;
D O I：
10.1016/S0921-5107(03)00182-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
((LRE)(0.33)Eu0.33Gd0.33)Ba2Cu3O, bulk superconductor (LRE = Sm, Nd) were textured by the top seeded melt textured growth method in a reduced oxygen atmosphere. Their physical properties and their microstructure were studied (Sm0.33Eu0.33Gd0.33)Ba2Cu3Oy textured material exhibited a critical temperature of 94 K and critical current densities at 77 K of 50 000 A CM-2 under self field and 20 000 A cm(-2) under 2 T. In the case of (Nd0.33Eu0.33Gd0.33)Ba(2)Cu(3)Oy, an optimal critical temperature of 95 K is reached. Moreover, high critical current density under self field of 60 000 A cm(-2) is obtained. This last result has been confirmed by transport measurements. Indeed, critical current densities at 77 K higher than 50 000 A cm(-2) have been measured when the applied field was below 2 T. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：118 / 120
页数：3
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