We have investigated the influence of combined additions of Ag 2 O and BaO 2 with the aim of producing good- quality single-grain SmBa 2 Cu 3 O y "Sm-123" material in air, and have characterized its superconducting performance with a SQUID magnetometer. The quality of the Sm-123 material was improved with increasing the Ag 2 O content from 0 wt% to 20 wt%. Magnetization measurements indicated that the T c (onset) increases with Ag 2 O concentration i.e. from 86 K to 92 K for Ag 2 O addition of 10 wt% to 20 wt%. At 77 K, the critical current density of 10 kA/cm 2 was achieved at 0 T (self-field). These results indicate that high-performance bulk Sm-123 materials can be fabricated even in air when optimum quantity of BaO 2 and silver is added.
|出版物ステータス||Published - 2013 1 1|
|イベント||26th International Symposium on Superconductivity, ISS 2013 - Tokyo, Japan|
継続期間: 2013 11 18 → 2013 11 20
ASJC Scopus subject areas
- Physics and Astronomy(all)