Weakening of thickness dependence of JC in YBa2Cu3O7-δ films using a titanium-added MOD precursor solution

被引：0

作者：

Zhang, H. L. ^{[1
,2
,3
]}

Ding, F. Z. ^{[1
,2
]}

Gu, H. W. ^{[1
,2
]}

Dong, Z. B. ^{[1
,2
]}

Qu, F. ^{[1
]}

Zhang, H. ^{[1
]}

Shang, H. J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Hebei Univ Engn, Sch Sci, Handan 056038, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2017年 / 535卷

基金：

北京市自然科学基金;

关键词：

YBa2Cu3O7-delta; Thick film; Flux pinning; MOD; BaTiO3; THIN-FILMS;

D O I：

10.1016/j.physc.2017.03.006

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

BaTiO3 (BTO)-doped YBa2Cu3O7-delta (YBCO) films were prepared by the metal-organic deposition method using a precursor solution with titanium ion. These YBCO films were deposited on (001)-oriented LaAlO3 single-crystal substrates using an automated dip coater. The thickness dependence of critical current density (Jc) in the BTO-doped YBCO films was investigated. The Jc value of the YBCO composite film was reduced from 6.3 to 4.6 MA/cm(2) with increasing film thickness from 450 to 930 nm in self-filed at 77K, which arose mainly from degradation of texture and roughening of the film. However, relative to undoped YBCO thick films, Jc values of the YBCO composite thick films were greatly improved, and more importantly, the reduction in Jc with increasing film thickness was hindered, especially in a high magnetic field. This result indicated that the introduction of BTO nanoparticles as pinning centers into YBCO matrix weakened the thickness dependence of Jc. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：30 / 33

页数：4

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