A new look at the ground state properties of Ce2Ir3Al9: Coexistence of two competing energy scales

•The compound exhibits a characteristic features for intermediate valence state and a Kondo lattice behaviour.•At low temperatures a deviation from the conventional Fermi liquid picture was observed in the ρ(T, B) and Cp/T data.•Below ~ 6 K the zero-field ratio of S(T)∕T exhibits a noticeable increa...

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