We measured the field distribution and the variation of temperature in a large-grain Gd-Ba-Cu-O bulk superconductor during pulse field magnetization. When the applied field was below 3.1 T, the temperature rise due to flux motion was small because the magnetic flux penetrated only the surface thin layer. The trapped field increased with increasing field, although the sample temperature was raised and the trapped field reached 1.6 T for the applied pulse field of 3.1 T. However, when the applied field exceeded 3.1 T, the trapped field suddenly decreased due to an excessive temperature rise in the sample. Thus there is an optimum peak field for the pulse field magnetization process.
|ジャーナル||Physica C: Superconductivity and its applications|
|出版ステータス||Published - 2003 10|
|イベント||Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan|
継続期間: 2002 11 11 → 2002 11 13
ASJC Scopus subject areas