Abstract—

We have synthesized a GaSb–Fe₃Ga₄ semiconducting eutectic composite. It has been characterized by X-ray diffraction at different temperatures, and we have determined the elemental composition of its matrix, metallic inclusions, and the interfacial zone. Its specific magnetization and magnetic susceptibility have been measured by a ponderomotive method in the temperature range ~80–750 K and a vibrating sample method at 4.6 and 295 K in magnetic fields of up to B = ±14 T. The GaSb–Fe₃Ga₄ eutectic composite has been shown to have properties of a magnetic material with a Curie temperature T_C = 355 K. At liquid-nitrogen temperature, the specific magnetization of the eutectic composite is σ ≈ 1.5 A m²/kg and its average magnetic moment is µ ≈ 0.17µ_В. The magnetic characteristics of the composite have been shown to be stable to thermal loads up to 750 K and insensitive to the external magnetic field up to 14 T.

中文翻译：

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GaSb-Fe3Ga4 共晶复合材料的磁特性

摘要——

我们已经合成了 GaSb-Fe ₃ Ga ₄半导体共晶复合材料。它已通过不同温度下的 X 射线衍射表征，我们已经确定了其基体、金属夹杂物和界面区的元素组成。其特定的磁化强度和磁化率已通过在 ~80–750 K 温度范围内的有质动力法和在 4.6 和 295 K 的振动样品法在高达B = ±14 T 的磁场中测量。GaSb –Fe ₃ Ga ₄共晶复合材料已被证明具有居里温度T _C的磁性材料特性= 355 K。在液氮温度下，共晶复合材料的比磁化强度为 σ ≈ 1.5 A m ² /kg，其平均磁矩为 µ ≈ 0.17µ _В。复合材料的磁特性已被证明对高达 750 K 的热负荷是稳定的，并且对高达 14 T 的外部磁场不敏感。