We report the structural, and magnetic properties as well as magnetocaloric effect of a polycrystalline compound of ${\mathrm{Tb}}_2{\mathrm{Rh}}_3\mathrm{Ge}$. This compound crystallizes with ${\mathrm{Mg}}_2{\mathrm{Ni}}_3\mathrm{Si}$-type of rhombohedral Laves phases (space group $R\bar{3}m$, hR18). The magnetic properties and magnetocaloric effect of ${\mathrm{Tb}}_2{\mathrm{Rh}}_3\mathrm{Ge}$ are explored through dc-magnetization measurements. Temperature dependence of magnetization revealed that the compound exhibits ferromagnetic behavior with $T_C=56$ K. The field dependence of magnetization indicates that ${\mathrm{Tb}}_2{\mathrm{Rh}}_3\mathrm{Ge}$ is a soft ferromagnet. The obtained isothermal magnetic entropy changes ($\mathrm{\Delta }{S}_m$) and refrigeration capacity (relative cooling power) for a change of magnetic field 0–9 T are 12.74 J kg⁻¹K⁻¹ and 497(680) J/kg respectively. The Arrott plots and universal curve of normalized $\mathrm{\Delta }{S}_m$ indicate that this compound undergoes a second order ferromagnetic phase transition.

我们报告了多晶化合物的结构和磁性以及磁热效应 ${\mathrm{结核病}}_2{\mathrm{铑}}_3\mathrm{葛}$. 该化合物结晶为${\mathrm{镁}}_2{\mathrm{你}}_3\mathrm{硅}$- 菱面体 Laves 相的类型（空间群 $\mathrm{电阻}\bar{3}米$, hR18)。磁特性和磁热效应${\mathrm{结核病}}_2{\mathrm{铑}}_3\mathrm{葛}$通过直流磁化测量进行探索。磁化强度的温度依赖性表明该化合物表现出铁磁行为${吨}_C=56$ K. 磁化强度的场相关性表明 ${\mathrm{结核病}}_2{\mathrm{铑}}_3\mathrm{葛}$是软铁磁体。得到的等温磁熵变（$\mathrm{\Delta }{秒}_{米}$) 和制冷能力（相对冷却功率）对于 0-9 T 的磁场变化分别为 12.74 J kg ^-1 K ^-1和 497(680) J/kg。归一化的阿罗特图和通用曲线$\mathrm{\Delta }{秒}_{米}$ 表明该化合物经历了二阶铁磁相变。