Anisotropic magnetic behavior of Nd₃ScBi₅ and Pr₃ScBi₅ single crystals

This talk presents the magnetic, thermodynamic, and transport properties of single-crystalline Nd₃ScBi₅ and Pr₃ScBi₅, newly synthesized members of the Ln₃ScBi₅ family that crystallize in the hexagonal P6₃/mcm structure with twisted kagome nets of rare-earth atoms. Both compounds exhibit antiferromagnetic order at low temperatures, with Nd₃ScBi₅ showing two successive transitions (T_N = 5.6 K and T₂ = 4.7 K) and Pr₃ScBi₅ a single transition at T_N = 5.3 K. Magnetization measurements reveal strong easy-plane anisotropy and multiple metamagnetic transitions for Nd₃ScBi₅ when H ‖ [100], while Pr₃ScBi₅ displays a single field-induced transition. Magnetotransport and Hall-effect measurements further demonstrate a strong coupling between charge transport and magnetic order. The resulting H - T phase diagrams highlight the interplay of RKKY interactions and crystal-electric-field effects in stabilizing multiple field-driven magnetic phases, identifying these compounds as promising platforms for studying anisotropic magnetism in intermetallic systems.