Large reversible magnetocaloric effect in Tb3Co compound

A large reversible magnetocaloric effect has been observed in ${\mathrm{Tb}}_3\mathrm{Co}$ compound. Under a magnetic field change of $5\mathrm{T}$ , the maximum value of magnetic entropy change $\Delta S_M$ is $-18\mathrm{J}{\mathrm{kg}}^{-1}{\mathrm{K}}^{-1}$ at $84\mathrm{K}$ and the relative cooling power is $738\mathrm{J}{\mathrm{kg}}^{-1}$ with no hysteresis loss. In particular, the large reversible $\Delta S_M^{\max }$ , $-8.5\mathrm{J}{\mathrm{kg}}^{-1}{\mathrm{K}}^{-1}$ , is achieved for a low magnetic field change of $2\mathrm{T}$ . The magnetic anisotropy and the texture of the material greatly affect $\Delta S_M$ . The large reversible magnetocaloric effect (both the large $\Delta S_M$ and the high relative cooling power) indicates that ${\mathrm{Tb}}_3\mathrm{Co}$ could be a promising candidate for magnetic refrigeration.