Characterization of high-Tc superconducting tapes using Hall sensors

Jaakko A.J. Paasi, Markku J. Lahtinen

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

A new inductive method for the characterization of high-Tc 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 μT 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 densities of high-Tc 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-223/Ag tapes.

Original languageEnglish
Pages (from-to)382-390
Number of pages9
JournalPhysica C: Superconductivity and its Applications
Volume216
Issue number3-4
DOIs
Publication statusPublished - 1 Nov 1993
MoE publication typeA1 Journal article-refereed

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