Title :
Critical Current Properties of
-Axis Oriented Hg(Re)1223 Bulks
Author :
Ozaki, Takashi ; Shimoyama, Jun-ichi ; Ogino, Hiroshi ; Yamamoto, Akiyasu ; Kishio, Kohji
Author_Institution :
Dept. of Appl. Chem., Univ. of Tokyo, Tokyo, Japan
Abstract :
The easy magnetization axis of Hg(Re)1223 is c-axis, which enables us to synthesize c-axis oriented Hg(Re)1223 polycrystalline materials using a static magnetic field. In the present study, fabrication of the c-axis oriented Hg(Re)1223 bulks was attempted by the slip-casting method in magnetic field. The Hg(Re)1223 powder sintered under various conditions was slip-cast in 8 T and 2nd-sintered under various conditions. The 2nd-sintered bulks showed Jc ~ 12 kA cm-2 at 20 K and ~ 2.4kA cm-2 at 77 K in low fields, which are quite high values for Hg(Re)1223 sintered bulks.
Keywords :
barium compounds; calcium compounds; casting; critical current density (superconductivity); high-temperature superconductors; magnetic field effects; magnetisation; mercury compounds; sintering; 2nd-sintered bulks; Hg(Re)1223 powder sintering; c-axis oriented Hg(Re)1223 bulks; critical current properties; easy magnetization axis; polycrystalline materials; slip-casting; static magnetic field; temperature 20 K; temperature 77 K; Couplings; Fabrication; Magnetic fields; Magnetization; Materials; Microstructure; Powders; Critical current density; Hg(Re)1223; high temperature superconductors; magnetic orientation;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2012.2235520