Characterization of high-Tc superconducting tapes using Hall sensors

Jaakko A.J. Paasi; Markku J. Lahtinen

doi:10.1016/0921-4534(93)90081-Z

Characterization of high-T_c superconducting tapes using Hall sensors

Jaakko A.J. Paasi^*
, Markku J. Lahtinen

^*Corresponding author for this work

Not published at VTT

Tampere University of Technology (TUT)

Research output: Contribution to journal › Article › Scientific › peer-review

18 Citations (Scopus)

Abstract

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 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-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-223/Ag tapes.

Original language	English
Pages (from-to)	382-390
Number of pages	9
Journal	Physica C: Superconductivity and its Applications
Volume	216
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(93)90081-Z
Publication status	Published - 1 Nov 1993
MoE publication type	A1 Journal article-refereed

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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.",

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N2 - 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.

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Characterization of high-T_c superconducting tapes using Hall sensors

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