The formation and texture of Bi-2223 phase during sintering in high magnetic fields were investigated. Samples contained in silver crucibles were sintered at different temperatures from 835 to 860 °C for 120 h in a vertical tube furnace installed in a solenoid-type superconducting magnet. A vertical magnetic field, Ha of 10 T can be applied parallel to the long axis of the furnace. It has been found that the mixed structures of the Bi-2223 and the Bi-2212 grains with their c-axis parallel to the magnetic field are formed in samples sintered at 850-855 °C in 10 T magnetic field. Below 845 °C sintering in 10 T, a high proportion of Bi-2223 phase is obtained, however no preferred orientation is observed. It is suggested that a liquid phase is important for the formation of the textured structure in magnetic fields.
|ジャーナル||Physica C: Superconductivity and its applications|
|出版ステータス||Published - 2003 10月|
|イベント||Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan|
継続期間: 2002 11月 11 → 2002 11月 13
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