Characterization of superconducting rings using an in-field Hall probe magnetic mapping system

Author

Granados, X. ; Sena, S. ; Bartolomé, E. ; Palau, A. ; Puig, T. ; Obradors, X. ; Carrera, M. ; Amorós, J. ; Claus, H.

Author_Institution

Inst. de Ciencia de Mater. de Barcelona, Bellaterra, Spain

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

3667

Lastpage

3670

Abstract

A Hall probe magnetic imaging system that works in magnetic fields in the range -1 T to 1 T has been implemented, and it has been used to characterize the superconducting behavior of single domain melt textured YBa₂Cu₃O₇ rings. We show that in addition to the analysis of the evolution of the local magnetic field distribution when the external magnetic field is cycled, the hysteretic behavior of the magnetic moment can also be investigated after integration of the local magnetic field. The critical current density has been determined through the critical state model and it has been compared to that calculated by inversion of the Biot-Savart law. A remarkable agreement is achieved with both methods.

Keywords

Hall effect devices; barium compounds; critical current density (superconductivity); high-temperature superconductors; magnetic hysteresis; magnetic moments; yttrium compounds; -1 to 1 T; Biot-Savart law; Hall probe magnetic imaging system; YBa₂Cu₃O₇; critical current density; critical state model; magnetic field; magnetic hysteresis; magnetic moment; melt textured YBa₂Cu₃O₇ superconducting ring; Critical current density; Hall effect devices; Magnetic domains; Magnetic field measurement; Magnetic fields; Magnetic flux; Magnetic levitation; Magnetic materials; Superconducting magnets; Superconducting materials;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812426

Filename

1212423