Transport and magnetic properties of CeAuGa3 single crystals

Single crystals of CeAuGa₃ which crystallize in a BaAl₄-type structure are synthesized and their physical properties were investigated by magnetization, transport, and specific heat measurements. The BaAl₄-type CeAuGa₃ is a highly anisotropic ferromagnet with the transition temperature with $T_c=1.8\text{K}$, which is confirmed by the hysteresis loop at low temperatures in magnetization measurements. Crystalline-electric field plays an important role in magnetic properties and the small Sommerfeld coefficient $\gamma =12.6\text{mJ}/{\text{mol K}}^2$ indicates that CeAuGa₃ has a weak Kondo effect. These observations demonstrate that CeAuGa₃ is an interesting example involving the possible interplay of ferromagnetic, crystalline-electric field and Kondo effect.