Tilt angle dependences of vortex structure and critical current density at low-angle grain boundaries in YBa2Cu3O7-x films

被引：22

作者：

Horide, Tomoya ^{[1
]}

Matsumoto, Kaname ^{[1
]}

Yoshida, Yutaka ^{[2
]}

Mukaida, Masashi ^{[3
]}

Ichinose, Ataru ^{[4
]}

Horii, Shigeru ^{[5
]}

机构：

[1] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan

[2] Nagoya Univ, Dept Energy Engn & Sci, Nagoya, Aichi 4648603, Japan

[3] Kyushu Univ, Dept Mat Sci & Engn, Fukuoka 8190395, Japan

[4] Cent Res Inst Elect Power Ind, Elect Power Engn Res Lab, Yokosuka, Kanagawa 2400196, Japan

[5] Univ Tokyo, Dept Appl Chem, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.77.132502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A tilt angle dependence of vortex structure was studied at low-angle grain boundaries (LAGBs) in YBa2Cu3O7-x films. The 2 degrees tilt LAGB did not degrade J(c) of the film in a self-field, demonstrating the existence of Abrikosov vortices at the 2 degrees LAGB. The magnetic field dependence of the flux flow resistance indicated the existence of Abrikosov Josephson vortices at the 5 degrees tilt LAGB. At the 10 degrees tilt LAGB, a Josephson junction behavior was observed in a self-field, indicating the existence of Josephson vortices. The influence of the LAGBs on critical current density was understood based on these vortices.

引用

页数：4

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