超伝導
溶融法で作製した YBaCuO の磁化特性
1990 年 14 巻 2 号 p. 501-504
詳細
1990 年 14 巻 2 号 p. 501-504
D.C. magnetization measurements were carried out on YBaCuO prepared by the quench and melt growth (QMG) process using a vibrating sample magnetometer and a SQUID magnetometer below 100 K. It was found that the D.C. magnetization behavior of QMG processed YBaCuO at 4.2 K can be quantitatively explained in terms of Bean‘s critical state model. This sample also can become a strong bulk permanent magnet with an energy product of more than 80 MGOe at 5 K because of its strong pinning force.
