Flux pinning by Gd-211 particles in ternary (Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy melt-processed superconductors

被引：5
作者：
Muralidhar, M
Nariki, S
Jirsa, M
Murakami, M
机构：
[1] Int Superconduct Technol Ctr, Superconduct Res Lab, Minato Ku, Div 3, Tokyo 1050023, Japan
[2] ASCR, Inst Phys, CZ-18221 Prague 8, Czech Republic
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷
关键词：
(Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy; melt processing; microstructure; flux pinning;
D O I：
10.1016/S0921-4534(02)01534-4
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Sub-micron Gd2BaCuO5 (Gd-211) particles were embedded in the ternary (Nd0.33SM0.33Gd0.33)Ba2Cu3Oy (NSG-123) melt-textured superconductors. To enhance critical current density at low fields, different amounts of the secondary phase were added and refined by addition of 0.5 mol% Pt and I mol% CeO2. Optical and scanning electron microscopy indicated sub-micron, mostly Gd-211, particles in the final product. Critical currents in remanent state increased monotonously with 211 concentration but the secondary peak did not nearly change. Critical current density of 100 kA cm(-2) at 77 K and the applied field of 2 T was achieved in the NSG-123 sample with 10 mol% Gd-211. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：746 / 749
页数：4
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