Coexistence of superconductivity and ferromagnetism in Sr0.5Ce0.5FBiS2
  Through the combination of X-ray diffraction, electrical transport, magnetic susceptibility, and the heat capacity measurements, we studied the effect of Ce doping in the newly discovered SrFBiS${2}$ system. It is found that Sr${0.5}$Ce${0.5}$FBiS${2}$ undergoes a second-order transition below $7.5 K, followed by a superconducting transition with the critical temperature Tc=2.8 K. Our transport, specific heat and DC-magnetization results suggest the presence of bulk ferromagneticcorrelation of Ce ion below 7.5 K that coexist with superconductivity when the temperature is further lowered below 2.8 K. 
Lin Li, Yuke Li, Yuefeng Jin, Haoran Huang, Bin Chen, Xiaofeng Xu,   Jianhui Dai, Li Zhang, Xiaojun Yang, Huifei Zhai, Guang...
cond-mat.supr-con