Influence of substrate irradiation on critical current density and microstructure in YBCO thin films

被引：6

作者：

Leonhardt, S

Albrecht, J

Warthmann, R

Habermeier, HU

Kronmüller, H

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] Max Planck Inst Met Forsch, D-70569 Stuttgart, Germany

来源：

PHYSICA C | 2000年 / 341卷

关键词：

Chemical modification - Critical current density (superconductivity) - Crystal microstructure - Epitaxial growth - Ion beams - Irradiation - Magnetic flux - Magnetooptical effects - Pulsed laser deposition - Strontium compounds - Superconducting films - Transmission electron microscopy;

D O I：

10.1016/S0921-4534(00)01180-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Strontiumtitanate substrates have been irradiated in defined areas with a focused ion beam (FIB) of gallium ions. This leads to a change of the sur face structure of the substrates. Afterwards YBCO was grown epitactically on these substrates by pulsed laser deposition. The effect of the modification on the flux density distribution in the YBCO thin films has been observed magnetooptically and the local current distribution has been determined. The correlation between the change in j(c) and the microstructure of the YBCO samples, investigated by transmission electron microscopy (TEM), is discussed.

引用

页码：1979 / 1980

页数：2