NDLI: Magnetization of a Current-Carrying Superconducting Disk with B-Dependent Critical Current Density

Content Provider	Springer Nature Link
Author	Sohrabi, Mahdi Babaei Brojeny, Ali A.
Copyright Year	2010
Abstract	In the frame work of the critical state model (CSM), the magnetic response of a thin type-II superconducting disk that carries a radial transport current and is subjected to an applied magnetic field have been studied. To this end, we have studied the process of the magnetic flux-penetration. For a disk initially containing no magnetic flux but carrying a radial current, when a perpendicular magnetic field is applied, magnetic flux-penetration occurs in three stages: (1) the magnetic flux gradually penetrates from the edges of the disk until an instability occurs, (2) there is a rapid inflow of magnetic flux into the disk’s central region, which becomes resistive, and (3) magnetic flux continues to enter the disk, while persistent azimuthal currents flow in an outer annular region where the net current density is equal to J $_{c}$. Also the behavior of a current-carrying disk subjected to an AC magnetic field is calculated. The magnetic flux, the current profiles and the magnetization hysteresis loops are calculated for several commonly used J $_{c}$(B) dependences. Finally, the results of the applications of the local field-dependent of the critical current density J $_{c}$(B) are compared with those obtained from the Bean model.
Starting Page	395
Ending Page	409
Page Count	15
File Format	PDF
ISSN	00222291
Journal	Journal of Low Temperature Physics
Volume Number	161
Issue Number	3-4
e-ISSN	15737357
Language	English
Publisher	Springer US
Publisher Date	2010-07-07
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Critical state model (CSM) Flux-penetration Magnetization and magnetic hysteresis loop Magnetism, Magnetic Materials Characterization and Evaluation of Materials Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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