Processing of large, single grain YBa2CU3O7-δ/Y2BaCuO5/Y2Ba4CuNbOy bulk composites

被引：18
作者：
Babu, NH
Shi, YH
Iida, K
Cardwell, DA
Haindl, S
Eisterer, M
Weber, HW
机构：
[1] Univ Cambridge, Interdisciplinary Res Ctr Superconduct, Cambridge CB3 0HE, England
[2] Univ Vienna, Inst Atom, A-1020 Vienna, Austria
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2005年 / 426卷
基金：
英国工程与自然科学研究理事会;
关键词：
bulk superconductors; YBCO; flux pinning; nano-particles; FLUX-PINNING CENTERS; (RE)-BA-CU-O SUPERCONDUCTORS; URANIUM; PARTICLES; PHASE;
D O I：
10.1016/j.physc.2005.02.060
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
YBa2Cu3O7-delta/Y2O3/Y2BaCuO5 (Y-123/Y2O3/Y-211) precursor powders enriched with various amounts of Nb2O5 and Y2Ba4NbCuOy have been fabricated successfully in the form of large, single grain superconductors. Microstructural studies of these composites reveal the presence of nanometer-sized (as small as 10-20 nm) Y2Ba4NbCuOy phase particles and relatively larger sized Y-211 phase particles (about a micron) embedded in the YBa2Cu3O7-delta phase matrix. The field trapping ability of these nano-composites is observed to increase significantly compared to undoped YBCO. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：520 / 526
页数：7
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