Effect of air humidity on the microstructure and properties of large-area YBa2Cu3O7-x films by TFA-MOD process

被引：0

作者：

Ding, Fazhu ^{[1
]}

Lv, Xudong ^{[1
]}

Gu, Hongwei ^{[1
]}

Li, Tao ^{[1
]}

机构：

[1] Gen Res Inst Nonferrous Met, Ctr Supercond Res, Beijing 100088, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 5-6期

关键词：

TFA-MOD; YBCO film; Air humidity; YBCO THIN-FILMS; MICROWAVE; SAPPHIRE; DEPOSITION;

D O I：

10.1016/j.physc.2009.01.003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Large-area YBa2Cu3O7-x (YBCO) films had been successfully fabricated on LaAlO3 (LAO) substrate by metalorganic deposition using trifluoroacetates (TFA-MOD) and the effect of air humidity on the structure and properties of YBCO films was systematically investigated. The precursor coating process was performed in the air humidity range of 70-40%. According to the X-ray diffraction (XRD) and scanning electron microscopy (SEM) images, the films prepared at high air humidity showed poor electrical performance due to large pores and impurity phases. In contrast, dense, homogeneous and epitaxially grown YBCO films prepared at low air humidity with the critical current densities of 3.8-5.0 MA cm(-2) at 77 K had been obtained. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：193 / 198

页数：6

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