Calculation of the temperature dependent AC susceptibility of superconducting disks

Author

Qin, M.J. ; Li, G. ; Liu, H.K. ; Dou, S.X.

Author_Institution

Inst. for Supercond. & Electr. Mater., Univ. of Wollongong, NSW, Australia

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

3742

Lastpage

3745

Abstract

The temperature dependent complex AC susceptibilities of high temperature superconducting disks in perpendicular AC magnetic fields (in absence of DC magnetic field) have been calculated from first principles. The temperature dependent AC susceptibilities for different AC field amplitudes, AC field frequencies, reduced pinning potential, and sample thickness have been derived, which demonstrate many features different from what has been observed in the configuration of infinite long slab or cylinder under a parallel-applied AC field. The results of such a realistic configuration of finite-thickness samples in perpendicular fields can be compared directly to the experimental results.

Keywords

critical current density (superconductivity); flux pinning; high-temperature superconductors; magnetic susceptibility; magnetisation; AC field amplitudes; AC field frequencies; high temperature superconductor; reduced pinning potential; sample thickness; superconducting disks; temperature dependent AC susceptibility; Current density; Frequency; High temperature superconductors; Laplace equations; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic susceptibility; Magnetic variables measurement; Temperature dependence;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812537

Filename

1212442