The synthesis and magnetic structure of the iron selenide Ba0.8Fe2Se2

9th International Conference on Magnetic and Superconducting Materials

Güler, N Kantarc^1 ; Gürsul, M.^1 ; Iik, C.^1 ; Ekicibil, A.^1 ; Özçelik, B.^1 ; Okazaki, H.^2 ; Takeya, H.^2 ; Takano, Y.^2

Department of Physics, Faculty of Sciences and Letters, Çukurova University, Adana, Turkey^1

National Institute for Materials Science, 1-2-1 Sengen, Ibaraki, Tsukuba

305-0047, Japan^2

关键词: Ba ions;    Ferro-magnetic interactions;    High field;    Iron selenide;    Low field;    Lower temperatures;    Multi-phase structures;    Superconducting transitions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/667/1/012003/pdf
DOI  :  10.1088/1742-6596/667/1/012003

来源: IOP

【 摘 要 】

The BaxFe2-ySe2(x=0.8) single crystal has been synthesized by using the one step technique at relatively lower temperatures. We have investigated structural properties of samples by using the XRD, SEM-EDX and magnetic properties. The SEM results clearly demonstrate that Ba ions are intercalated in the FeSe lattice. XRD result shows that the sample prepared has multi-phase structure. According to our M-H measurements perfect diamagnetism has been observed only in low field at 5 K. In addition, those curves indicate that the high field value and some impurities reveal ferromagnetic interactions. The superconducting transition was observed at around Tc≈10.9 K.