Sm（O，F）BiS $_2$单晶的氟溶解度和超导性能
Fluorine solubility and superconducting properties of Sm(O,F)BiS$_2$ single crystals
摘要：
用KI-KCl助熔剂生长了不同名义氟含量的Sm（O，F）BiS_2超导单晶。F在Sm（O，F）BiS 2单晶中O位的固溶极限约小于20at%。Sm（O，F）BiS 2单晶的F浓度几乎不受名义F含量的控制。这表明存在本征稳定相。在5 K左右显示出超导性。零电阻率的超导转变温度随着标称F含量的增加而增加，在O位小于70原子%的范围内，尽管F浓度和c轴晶格常数相似。
英文摘要：
Sm(O,F)BiS2 superconducting single crystals with various nominal F contents have been grown using KI-KCl flux. The solid solution limit of F at the O-site in Sm(O,F)BiS2 single crystals was approximately less than 20 at%. F concentrations of Sm(O,F)BiS2 single crystals were hardly controlled by nominal F contents. It suggests the existence of intrinsic stable phase. Superconductivity was shown at around 5 K. Superconducting transition temperature with zero resistivity were increased with increasing nominal F contents within less than 70 at% in O-site, despite similar F concentration and c-axis lattice constants.
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