Enhancement of superconductivity in the sintered FeSe0.5Te0.5 bulks with proper amount of Sn addition
Enhancement of superconductivity in the sintered FeSe0.5Te0.5 bulks with proper amount of Sn addition
复制标题
添加适量 Sn 增强烧结 FeSe0.5Te0.5 块体的超导性
DOI：
10.1016/j.jallcom.2015.01.288
复制
发表时间：
2015-06-05
影响因子：
6.2
通讯作者：
Al Hossain, M. Shahriar
中科院分区：
文献类型：
--
作者：
Chen, Ning;Liu, Yongchang;Al Hossain, M. Shahriar
Sn added bulk FeSe0.5Te0.5 samples are synthesized through two-step solid state reaction route. It is found that Sn addition can significantly enhance the transformation from the hexagonal phase to the superconducting tetragonal phase during the sintering process of FeSe0.5Te0.5 samples due to the appearance of liquid Sn at low temperature. With increase of superconducting phase proportion as well as improvement of its crystallinity, 5 wt% Sn addition dramatically enhances the zero resistivity temperature (T-c(0)) by 3K accompanying with a bit improvement in the onset temperature of superconducting transition (T-c(on)). From this view, our work suggests a new prospective that how to search proper dopant to further improving superconductivity in 11 type Fe based superconductors. (C) 2015 Elsevier B.V. All rights reserved.
