A phase relation study of Ba-Y-Cu-O coated-conductor films using the combinatorial approach

被引：8

作者：

Wong-Ng, W. ^{[1
]}

Otani, M. ^{[1
]}

Levin, I. ^{[1
]}

Schenck, P. ^{[1
]}

Yang, Z. ^{[1
]}

Liu, G. ^{[1
]}

Cook, L. P. ^{[1
]}

Feenstra, R. ^{[2
]}

Zhang, W. ^{[3
]}

Rupich, M. W. ^{[3
]}

机构：

[1] NIST, Div Ceram, Mat Sci & Engn Lab, Gaithersburg, MD 20899 USA

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[3] Amer Superconductor Corp, Westborough, MA 01581 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 17期

关键词：

annealing; barium compounds; flux pinning; high-temperature superconductors; reaction kinetics; superconducting thin films; yttrium compounds; THIN-FILMS; SUPERCONDUCTORS; DEPOSITION; PROGRESS; GROWTH; SYSTEM;

D O I：

10.1063/1.3127222

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Phase relationships in bulk and thin film Ba-Y-Cu-O high-T(c) superconductor system were determined at processing conditions relevant for industrial production of coated conductors. Our results demonstrated that the absence of BaY(2)CuO(5) (which has a critical effect on flux pinning) at 735 degrees C-a typical temperature employed in production of coated conductors-in thin films processed in situ from the BaF(2) precursor is caused by the sluggish reaction kinetics rather than by the presence of fluorine in the system. Thermodynamic calculations combined with annealing experiments confirmed that BaY(2)CuO(5) is thermodynamically stable but forms at temperatures higher than 735 degrees C.

引用

页数：3

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