Figure 2
From: Emergence of Multiple Superconducting Phases in (NH3)yMxFeSe (M: Na and Li)
(a) Tc vs. x plots for (NH3)yNaxFeSe. x is determined from EDX spectra of the samples. (b) XRD patterns of (NH3)yNaxFeSe at x = 0.3, 0.5 and 1.1. (c) XRD peaks ascribable to 002 reflection of (NH3)yNaxFeSe at x = 0.3, 0.5 and 1.1. (d) c vs. x plots in (NH3)yNaxFeSe. Solid black and blue circles refer to low-Tc and high-Tc phases, respectively.
