Effects of artificial pinning centers on vortex pinning in high-temperature superconducting films

被引：20
|
作者：
Matsumoto, K [1 ]
Horide, T
Mele, P
Yoshida, Y
Mukaida, M
Ichinose, A
Horii, S
机构：
[1] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan
[2] Nagoya Univ, Dept Energy Engn & Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan
[3] Yamagata Univ, Dept Elect & Informat Engn, Yonezawa, Yamagata 9928510, Japan
[4] Canc Res Inst Elect Power Ind, Elect Power Engn Res Lab, Yokosuka, Kanagawa 2400196, Japan
[5] Univ Tokyo, Dept Superconduct, Tokyo 1138656, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2005年 / 426卷
关键词：
YBCO; artificial pinning center; J(c); vortex pinning;
D O I：
10.1016/j.physc.2005.02.094
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
One-dimensional artificial pinning centers (APCs) were introduced perpendicular to the surface of the c-axis oriented YBa2Cu3O7-delta (YBCO) films by Using Y2O3 nano-islands which were distributed on the substrates. In-field J(c) of the films was remarkably enhanced by this method and reached to 0.12 MA/cm(2) (77 K, B parallel to c, 5 T), which was 2-2.5 times higher than that of a pure YBCO film. The present films had a large J(c) peak when the field was applied close to the c-axis. The results indicate that the strong APCs were introduced into the YBCO films. The vortex pinning by the present APCs is discussed based on the accommodation angle of the vortices. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：1091 / 1095
页数：5
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