Title :
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
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2028297
