CHARACTERIZATION OF HIGH-T(C) SUPERCONDUCTING TAPES USING HALL SENSORS

被引：19

作者：

PAASI, JAJ

LAHTINEN, MJ

机构：

[1] Laboratory of Electricity and Magnetism, Tampere University of Technology, SF-33101 Tampere

来源：

PHYSICA C | 1993年 / 216卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)90081-Z

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A new inductive method for the characterization of high-T(c) superconducting tapes is proposed and tested. It is based on the measurement of the magnetic field profile produced by induced screening currents in a tape. The measurements are carried out using a movable miniature Hall sensor connected to a special electric circuit, allowing measurements of magnetic fields in the muT range (field due to tape magnetization) in applied fields in the mT range. The method can be used as a quick routine for the determination of transport critical current densities of high-T(c) superconducting tapes. Further, it effectively reveals macroscopic sample inhomogeneities resulting in a decrease in local transport current density. The method is demonstrated with experiments in Bi-2212/Ag and Bi-2223/Ag tapes.

引用

页码：382 / 390

页数：9

共 16 条

[1] HARD SUPERCONDUCTIVITY - THEORY OF MOTION OF ABRIKOSOV FLUX LINES [J].