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
fDate :
6/1/2009 12:00:00 AM
Abstract :
The Permanent Magnet method for measuring critical current density in high-temperature superconducting thin film 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. These tendency is also observed in the experimental investigation. Finally, the spatial distributions of the shielding current density are reproduced by the system experimentally.
Keywords :
critical current density (superconductivity); electric current measurement; high-temperature superconductors; numerical analysis; permanent magnets; superconducting thin films; critical current density; high-temperature superconducting thin film; maximum repulsive force; permanent magnet; spatial distributions; Critical current density; element-free Galerkin; high ${rm T}_{rm c}$ superconductor;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2020373
