Crystal structures and sign reversal Hall resistivities in iron-based superconductors Lix(C3H10N2)0.32FeSe ( 0.15 < x < 0.4 )
Sun Rui-Jin1, 2, Jin Shi-Feng1, 3, †, Deng Jun1, 2, Hao Mu-Nan1, 2, Zhao Lin-Lin1, 2, Fan Xiao1, 2, Sun Xiao-Ning1, 2, Guo Jian-Gang1, 2, Gu Lin1, 2, ‡
       

(a) Powder x-ray diffraction patterns of Lix(C3H10N2)yFeSe, with inset showing enlarge view of XRD patterns of x = 0.15 and 0.25, and (b) enlarged view of (00l) peak, showing a two-phase region between x = 0.15 and x = 0.25.