  The electronic ground state of Ca3LiOsO6 was recently considered within an
intermediate coupling regime that revealed J=3/2 spin-orbit entangled magnetic
moments. Through inelastic neutron scattering and density functional theory we
investigate the magnetic interactions and probe how the magnetism is influenced
by the change in hierarchy of interactions as we move from Ca3LiOsO6 (5d3) to
Ca3LiRuO6 (4d3). An alteration of the spin-gap and ordered local moment is
observed, however the magnetic structure, Neel temperature and exchange
interactions are unaltered. To explain this behavior it is necessary to include
both spin-orbit coupling and hybridization, indicating the importance of an
intermediate coupling approach when describing 5$d$ oxides.
