EPR and magnetic susceptibility measurements onCeB6

Abstract

We report measurements of temperature and magnetic field dependent magnetic susceptibility and electron paramagnetic resonance in the paramagnetic phase of ${\mathrm{CeB}}_{6}.$ From calculations of the possible ground state level structure of the interacting $4f$ electrons it is found that the fourfold degenerate ${\ensuremath{\Gamma}}_{8}$ is split into two doublets with equal g factors and an energy separation of the order of 30 K.