Analysis of Measurement Method for Critical Current Density by Using Permanent Magnet

Author

Ikuno, Soichiro ; Takayama, Teruou ; Kamitani, Atsushi ; Takeishi, Kenta ; Saito, Atsushi ; Ohshima, Shigetoshi

Author_Institution

Sch. of Comput. Sci., Tokyo Univ. of Technol., Hachioji, Japan

Volume

19

Issue

5

fYear

2009

Firstpage

3750

Lastpage

3754

Abstract

The permanent-magnet method for measuring critical current density in high-temperature superconducting thin films is numerically and experimentally investigated. Numerical results show that the critical current density is approximately proportional to the maximum repulsive force. Furthermore, the maximum repulsive force increases as the value of diameter of permanent magnet increases. This tendency is also observed in the experimental investigation. Finally, spatial distributions of the shielding current density are experimentally reproduced by the system.

Keywords

critical current density (superconductivity); current distribution; electric current measurement; high-temperature superconductors; permanent magnets; superconducting thin films; critical current density; high-temperature superconducting thin films; maximum repulsive force; measurement method; permanent magnet; shielding current density spatial distributions; Critical current density; element-free Galerkin; high- $T_{c}$ superconductor;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2028297

Filename

5235096