Bi系超伝導ガラスセラミックスにおける高温相の生成

概要

論文の詳細を見る
We prepared superconducting Bi1.6Pb0.4-xTexSr2Ca2Cu3Oy ( x=0.1, 0.2, 0.3 and 0.4 ) glass-ceramics by the melt-quenching method and examined the effect of Te addition on the formation of high-Tc phase. It was found that the formation of the high-Tc phase was largely enhanced by the addition of a small amount (x=0.1 and 0.2 ) of Te element. In the Bi1.6Te0.4Sr2Ca2Cu3Oy glass-ceramics, the main superconducting phase was the low-Tc phase. It was concluded that the lowering of the partial melting temperature at around 870°C caused by the coexistence of Pb and Te elements was very important for the formation of the high-Tc phase. The critical temperature of the sample ( x=0.2 ) annealed at 850°C for 100h was 103K.
社団法人粉体粉末冶金協会の論文