In this paper structure, magnetic and magneto-thermal properties: magnetic entropy change (ΔS _m) and refrigeration capacity (q) of Er_1–x Y _x (Co_0.84Fe_0.16)₂ alloys (x = 0, 0.2, 0.4, 0.6, 0.8, 1) in magnetic fields up to 90 kOe in a temperature range of 5–360K are investigated. An analysis of temperature dependences of magnetization (σ) and high-field susceptibility (χ _hf) showed that in these compounds, three different ferri- and a one ferromagnetic structures are consequently realized. Concentration dependences of magnetic moment at 5K (μ _f.u.), Curie temperature (T _C), residual magnetization (σ _r) and coercivity (H _c) have been shown to have an extreme at intermediate Y concentration. The character of temperature dependence of magnetic entropy change (ΔS _m(T)) depends on the composition and originates from the type of magnetic structure of the compound and the mutual orientation of R- and 3d- element sublattices magnetization with respect to the resulting one. In compounds with x = 0.6 and x = 0.8 temperature regions with different signs of ΔS _m are observed, reflecting the change of dominating R- or 3d- sublattice in the resulting magnetization.

本文结构中，磁和磁-热性能：磁熵变（Δ小号 _米）和制冷能力（q）铒的_{1- X} ý _X（钴_0.84铁_0.16）_2种合金（X = 0，0.2，0.4， 0.6, 0.8, 1) 在 5-360K 温度范围内高达 90 kOe 的磁场中进行了研究。对磁化强度 ( σ ) 和高场磁化率 ( χ _hf )的温度依赖性的分析表明，在这些化合物中，因此实现了三种不同的亚铁磁结构和一种铁磁结构。5K 时磁矩的浓度依赖性 ( μ _f.u. ），居里温度（Ť _Ç），剩余磁化强度（σ _{- [R} ）和矫顽力（H ^ _{C ^}）已经显示出具有在中间体Y浓度的极端。磁熵变 (Δ S _m ( T ))的温度依赖性特性取决于化合物的成分，源于化合物的磁结构类型以及 R 和 3d 元素亚晶格磁化的相互取向相对于所得一。在具有不同符号 Δ S _{m 的}x = 0.6 和x = 0.8 温度区域的化合物中 观察到，反映了在所产生的磁化中占主导地位的 R 或 3d 亚晶格的变化。