Development of Multipass MOCVD Process for Fabricating (Gd,Y)Ba2Cu3O7-δ Coated Conductors

被引：14

作者：

Jiang, Ping ^{[1
]}

Zhang, Shudong ^{[1
]}

Fan, Ziming ^{[1
]}

Xu, Shiwei ^{[1
]}

Zhang, Shuang ^{[1
]}

Ge, Meng ^{[1
]}

Gu, Hongwei ^{[2
]}

Chen, Yimin ^{[1
]}

机构：

[1] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China

[2] Chinese Acad Sci, Inst Elect Engn, Beijing 100864, Peoples R China

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2017年 / 27卷 / 04期

关键词：

Critical current density; coated conductors; high temperature superconductors; MOCVD; YBCO;

D O I：

10.1109/TASC.2016.2625759

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A multipass metal organic chemical vapor deposition (MOCVD) process has been optimized to fabricate REBa2Cu3O7-delta (REBCO) (RE = Gd + Y with Gd/Y = 1) thin-film superconducting tapes with high critical currents. Some optimum MOCVD parameters for multipass process are found to be different from those for single-pass process, including RE:Ba:Cu ratio in precursor and deposition temperature. An X-ray diffraction analysis on the effect of changing rare-earth (RE) content on the structural property indicates that an RE-rich composition can improve the in-plane alignment of an REBCO film and favor the multipass process. A 280-m-long REBCO tape made by a three-pass MOCVD process achieved an average critical current of 256.4 A in a 4-mm width with a standard deviation of 9.4 A at 77 K and self-field.

引用

页数：5

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