Title :
Critical magnetization current density and repulsive force determined by repulsive method
Author :
Christiansen, J.K.S. ; Andersen, L.G. ; Frederiksen, S.L. ; Mygind, J.
Author_Institution :
Tech. Univ. Denmark, Lyngby, Denmark
fDate :
6/1/1999 12:00:00 AM
Abstract :
Determination of the critical magnetization current density of large superconducting samples was performed using a levitation force method. It is based on measurement of the force between the superconductor and a permanent Nd-Fe-B magnet, thus the applied magnetic field may be up to /spl sim/0.4 tesla. At this field, levitation forces up to 6.6 N (5.5 MN/m/sup 3/) were measured on melt processed tablets of Y-Ba-Cu-O material with dimensions of /spl sim/2 cm/spl times/2 cm/spl times/0.3 cm.
Keywords :
barium compounds; critical current density (superconductivity); high-temperature superconductors; magnetic levitation; magnetisation; yttrium compounds; 0.4 T; Nd-Fe-B; Y-Ba-Cu-O; applied magnetic field; critical magnetization current density; large superconducting samples; levitation force; melt processed tablets; repulsive force; Current density; Force measurement; Magnetic field measurement; Magnetic fields; Magnetic levitation; Magnetic moments; Magnetization; Permanent magnets; Superconducting coils; Superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
