Figure 4. Magnetic susceptibility of the C_nF structures and the extracted values of the parameters of the spin system.

(a–c) Temperature dependence of the magnetic susceptibility for samples of three different stoichiometries, as indicated in each panel. The scattered points represent the experimental data, and the lines represent calculations of χ (T, J_AF, N_S) using Eq. 2. Different colours correspond to different guest molecules between the graphene planes: red for dichloromethane, blue for dichloroethane, green for acetonitrile, yellow for acetone, and violet for n-hexane. (d) Exchange-coupling values J_AF. (e) Concentration n_s of interacting spins per formula unit vs the basal-plane stoichiometry.