We report an investigation of the magnetic, thermodynamic, and transport properties of single-crystalline ${\mathrm{Nd}}_3{\mathrm{ScBi}}_5$ and ${\mathrm{Pr}}_3{\mathrm{ScBi}}_5$. Both compounds crystallize in the hexagonal $P{6}_3/mcm$ space group that is common to related materials with rare-earth atoms that form twisted kagome nets. ${\mathrm{Nd}}_3{\mathrm{ScBi}}_5$ undergoes two successive antiferromagnetic transitions, at $T_N=5.6\mathrm{K}$ and $T_2=4.7\mathrm{K}$. When a magnetic field is applied along $\left[100\right]$, both $T_N$ and $T_2$ are suppressed with increasing field, and multiple metamagnetic transitions are observed; in-plane anisotropy is demonstrated by a slight broadening and movement of the metamagnetic transitions when the field is applied along [110]. For H$\parallel \left[001\right]$, $T_N$ and $T_2$ exhibit only a weak field dependence and metamagnetic transitions are not observed. The magnetoresistance and Hall effect respond strongly to the metamagnetic transitions and further motivate a detailed characterization of the magnetic structures under applied fields. ${\mathrm{Pr}}_3{\mathrm{ScBi}}_5$, in contrast, undergoes a single antiferromagnetic transition at $T_N=5.3\mathrm{K}$ and a single metamagnetic transition at higher fields. These findings place ${\mathrm{Nd}}_3{\mathrm{ScBi}}_5$ and ${\mathrm{Pr}}_3{\mathrm{ScBi}}_5$ as promising systems for exploring anisotropic magnetism and field-driven magnetic phase transitions in intermetallic compounds.

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• Magnetic order
• Magnetism