Figure 4
From: Preparation and characterization of a new graphite superconductor: Ca0.5Sr0.5C6

R – T plots of Ca0.5(2)Sr0.5(2)C6 at different H’s under pressure of (a) 0.80 GPa and (b) 8.5 GPa. Inset of (a) shows how to determine T c, and inset of (b) shows plots of H – T c onset and H – T c for Ca0.5(2)Sr0.5(2)C6. The H – T c onset refers to H c2 – T plot.