Drastic improvement of surface structure and current-carrying ability in YBa2Cu3O7 films by introducing multilayered structure

被引：70

作者：

Pan, Alexey V. ^{[1
]}

Pysarenko, Serhiy ^{[1
]}

Dou, Shi X. ^{[1
]}

机构：

[1] Univ Wollongong, Inst Supercond & Elect Mat, Wollongong, NSW 2522, Australia

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 23期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1063/1.2211051

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Much smoother surfaces and significantly improved superconducting properties of relatively thick YBa2CU3O7 (YBCO) films have been achieved by introducing a multilayered structure with alternating main YBCO and additional NdBCO layers. The surface of thick (1 mu m) multilayers has almost no holes compared to YBCO films. Critical current density Q,) has been drastically increased up to a factor > 3 in 1 mu m multilayered structures compared to YBCO films over entire temperature and applied magnetic field range. Moreover, J(c) values measured in thick multilayers are, even larger than in much thinner YBCO films. The J(c) and surface improvement have been analyzed and attributed to growth conditions and corresponding structural peculiarities. (c) 2006 American Institute of Physics.

引用

页数：3

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