Non-Fermi-liquid behavior in CeRhBi and valence-fluctuating behavior in CeIrSb

We report the measurements of magnetic susceptibility χ, specific heat C, electrical resistivity ρ, and thermopower S of CeRhBi and CeIrSb, which are isostructural to the Kondo semimetal CeRhSb. For CeRhBi, C/T turns upward with decreasing temperature below 8 K, and increases in proportion to -logT down to 0.6 K. Non-Fermi-liquid behavior appears also in ρ(T) and χ(T); ρ∝T(0.4K