ESR and susceptibility studies of stage-I highly oriented pyrolytic graphite–OsF6graphite intercalation compound

ESR and susceptibility studies of highly oriented pyrolytic graphite–${\mathrm{OsF}}_6$(${\mathrm{C}}_{10}$ ${\mathrm{OsF}}_6$) stage-I graphite intercalated compounds are reported. The anisotropy in both ESR and magnetization are interpreted in terms of a quartet ground state of ${\mathrm{Os}}^{+5\mathrm{}}$, 5$d^3$ configuration, in axial local symmetry. The results yield information about charge transfer, anisotropic exchange, spin-orbit coupling, crystal-field splittings and molecular orientation.