In this study, we prepared GdZn₂ by mechanical alloying method and measured its magnetization to reveal the magnetic and magnetocaloric properties. For a milling time (MT) ≥ 10 and 20 h, the GdZn₂ phase was confirmed by X-ray diffraction measurements. For MT = 40 and 60 h, amorphous like patterns are observed. For MT = 10 and 20 h, magnetization (M) as a function of temperature below 80 K shows ferromagnetic-like increase. The observed values of M are 4.5 μ_B at 5 K for MT = 10 and 20 h, which is smaller than that of the theoretical expected value of 7 μ_B. For MT = 40 and 60 h, the long-range ferromagnetic order collapses because there is no spontaneous magnetization. The value of ΔT, where ΔT is the full width at half maximum of the magnetic entropy change (ΔS_m (T)), increases significantly for MT ≤ 20 h because of the gradual release of magnetic entropy by the milling effect. Since M decreases with increasing MT, the maximum values of |ΔS_m|, the relative cooling power, and the refrigerant capacity also decreases.

在这项研究中，我们通过机械合金化方法制备了 GdZn ₂并测量了它的磁化强度，以揭示其磁性和磁热性能。对于研磨时间 (MT) ≥ 10 和 20 小时，GdZn ₂相通过 X 射线衍射测量得到证实。对于 MT = 40 和 60 小时，观察到类似无定形的图案。对于 MT = 10 和 20 h，磁化强度 ( M ) 作为温度低于 80 K 的函数，显示出类铁磁体的增加。对于 MT = 10 和 20 h， M在 5 K时的_观测值为4.5 _μB，小于理论预期值 7 μB. 对于 MT = 40 和 60 小时，长程铁磁有序崩溃，因为没有自发磁化。ΔT的值，其中ΔT是磁熵变化的半峰全宽 ( ΔS _m ( T ))，在 MT ≤ 20 h 时显着增加，因为研磨效应会逐渐释放磁熵。由于M随着MT的增加而减小，| ΔS _m |的最大值、相对冷却功率和制冷剂容量也减小。