Bi-Sr-Ca-Cu-O 系セラミックスの超伝導特性に及ぼす Li 添加効果

Effect of Li Addition on Superconductivity in Bi-Sr-Ca-Cu-O System

Creators Anno Toshihiko

Creators Koyanagi Tsuyoshi

Creators Ohshima Youichi

Creators Fujii Takamitsu

Creators Hirai Hidetoshi

Creators Matsubara Kakuei

Creators Fujii Kazuhiro

Creators Daimon Hiroshi

The effects of Li addition for the Bi-Sr-Ca-Cu-O ceramics on their superconductivities have been investigated. Bi-Sr-Ca-Cu-O superconducting ceramics with 2212 phase were successfully obtained at low temperatures below 800℃ by addition of LiF and Li_2CO_3 which acted as a flux. The obtained ceramics exhibited the superconducting transition with the T_c onset of 93K and the T_c end of 85K, which was detected by the electrical resistivity and magnetic susceptibility measurements. This high transition temperature, as compared with T_c=75K of Bi-Sr-Ca-Cu-O system with 2212 phase, was related to an increase of c-axis lattice constant by containing Li ions.

[ISSN]0372-7661

[NCID]AN00244228