Dysprosium compounds with high magnetic anisotropy are widely studied as single molecule magnets (SMMs). Here the anisotropic magnetocaloric effect in a Dy(III) SMM, {[Dy(OSiMe₃)₂(4-Mepy)₅(BPh₄)] 0.5Toluene}, was studied by single crystals. Angular dependent magnetization can be observed at 300 K because of its high magnetic anisotropy. SMM behavior measured along the easy axis direction is identical to that of the polycrystalline sample. Rotating magnetization from the easy axis to the hard plane gives a maximum magnetic entropy change (–ΔS_R) of 3.05 J/(kg∙K) at 19 K at ΔB = 5 T, which enables the Dy(III) SMM to be used as a low-temperature rotating magnetic refrigerant.

具有高磁各向异性的镝化合物作为单分子磁体 (SMM) 被广泛研究。此处通过单晶研究了 Dy(III) SMM {[Dy(OSiMe ₃ ) ₂ (4-Mepy) ₅ (BPh ₄ )] 0.5Toluene} 中的各向异性磁热效应。由于其高磁各向异性，可以在 300 K 处观察到角相关磁化。沿易轴方向测量的 SMM 行为与多晶样品相同。从易轴到硬平面的旋转磁化强度在 Δ B处 19 K 时的最大磁熵变化 (–Δ S _R ) 为 3.05 J/(kg∙K) = 5 T，这使得 Dy(III) SMM 可以用作低温旋转磁制冷剂。