The thin-film disk and ring shaped type II superconductors in perpendicular magnetic fields

Author

Borovitskaya, E.S. ; Genkin, V.M. ; Leviev, G.I.

Author_Institution

Inst. of Solid State Phys., Acad. of Sci., Chernogolovka, Russia

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

1220

Lastpage

1223

Abstract

Properties of small, thin-film, disk-shaped and ring-shaped superconductors in the presence of perpendicular magnetic fields were considered within the framework of a model that takes into account the difference between magnetic induction and vortex density, vortex movement, and generation of vortices if current density exceeded its critical value. The linear complex magnetic susceptibility of a ring was calculated. It was shown that the distribution of the dissipative current differed considerably from the reactive one. The influence of the edge barrier on the form of the hysteresis loop, and current and field patterns for the ring in the critical state were shown.

Keywords

critical current density (superconductivity); electromagnetic induction; flux creep; flux-line lattice; magnetic hysteresis; magnetic susceptibility; superconducting thin films; type II superconductors; critical state; current patterns; dissipative current; field patterns; hysteresis loop; linear complex magnetic susceptibility; magnetic induction; perpendicular magnetic fields; ring shaped type II superconductors; thin-film disk; vortex density; vortex movement; Current density; Induction generators; Magnetic fields; Magnetic films; Magnetic hysteresis; Magnetic properties; Magnetic susceptibility; Superconducting magnets; Superconducting thin films; Type II superconductors;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.620731

Filename

620731