Evolution of superconductivity by oxygen annealing in FeTe0.8S0.2
Evolution of superconductivity by oxygen annealing in FeTe0.8S0.2
复制标题
DOI：
10.1209/0295-5075/90/57002
复制
发表时间：
2010-06-01
期刊：
影响因子：
1.8
通讯作者：
Takano, Y.
中科院分区：
文献类型：
--
作者：
Mizuguchi, Y.;Deguchi, K.;Takano, Y.
氧退火显着提高了超导性能的固态反应FeTe 0.8S0.2，这表明只有一个广泛的发病后，超导转变的合成。在200 ℃氧退火时，出现零电阻率，转变温度Tc（零）达到8.5K。屏蔽体积分数也从0提高到几乎100%。氧退火压缩了晶格常数，表明FeTe_（0.8）S_（0.2）体超导电性的演化与晶格的收缩有关。版权所有（C）EPLA，2010
Oxygen annealing dramatically improved the superconducting properties of solid-state-reacted FeTe0.8S0.2, which showed only a broad onset of superconducting transition just after the synthesis. The zero resistivity appeared and the transition temperature T-c(zero) reached 8.5 K by the oxygen annealing at 200 degrees C. The shielding volume fraction was also enhanced from 0 to almost 100%. The lattice constants were compressed by the oxygen annealing, indicating that the evolution of bulk superconductivity in FeTe0.8S0.2 was correlated to the shrinkage of the lattice. Copyright (C) EPLA, 2010