Water-vapor assisted photochemical fabrication of YBa2Cu3O7-x superconducting films with high critical current density

被引：2

作者：

Bian, Weibai ^{[1
]}

Chen, Yuanqing ^{[1
]}

Li, Lingwei ^{[1
]}

Zhao, Gaoyang ^{[1
]}

Li, Na ^{[1
]}

Wu, Huimin ^{[1
]}

Ma, Qinghua ^{[1
]}

You, Caiying ^{[1
]}

机构：

[1] Xian Univ Technol, Sch Mat Sci & Technol, Xian 710048, Shaanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 727卷

基金：

中国国家自然科学基金;

关键词：

YBCO superconducting film; Photochemical solution deposition; Deep-ultraviolet irradiation; Water vapor; THIN-FILMS; METAL; OXIDATION; DECOMPOSITION; ACTIVATION; MECHANISM; OZONE;

D O I：

10.1016/j.jallcom.2017.08.230

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel water-vapor assisted photochemical solution deposition method was put forward to fabricate high-performance YBa2Cu3O7-x (YBCO) superconducting films. The dip-coated gel films derived from YBCO solution with Y:Ba:Cu:F = 1:2:3:4 were exposed to deep UV light at a low temperature of 150 degrees C. During the UV exposure, water-vapor was artificially introduced to produce hydroxyl radicals (*OH) with strong oxidizing ability. After that, photon-activated amorphous oxide precursor films were obtained. It was found that the high-energy photons and *OH species promoted the cleavage of organic groups, enhanced the removal of residual organics, and improved the density of the YBCO films. Thus, YBCO superconducting films with improved superconducting properties were obtained after the crystallization process. The YBCO superconducting film that was UV-irradiated for 100 min with water vapor had a maximum critical current density (J(c)) of 8.69 MA/cm(2) (77 K and 0 T). (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1036 / 1043

页数：8

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