Triangular lattice antiferromagnet CeCd₃As₃

CeCd₃As₃ crystallizes into a hexagonal ScAl₃C₃-type structure. The magnetic Ce-ions form the triangular lattice of the two dimensional layer. Thermodynamic and transport properties of CeCd₃As₃ were investigated by measuring the magnetization, electrical resistivity, and specific heat. The Ce-ions in this metallic compound are well localized but do not order down to 0.42 K despite having a large negative Weiss temperature. In this presentation, anomalous physical properties due to the geometrical frustration of Ce-ions will be discussed.