Abstract

We have synthesized Fe_x(Cu_0.5In_0.5)_{1 – x}Cr₂S₄ solid solutions and measured their magnetization and dynamic magnetic susceptibility as functions of temperature between room temperature and liquid helium temperature in weak magnetic fields H = 100 Oe and Н_~ = 1 Oe at frequencies of 10, 100, 1000, and 10 000 Hz. The results have been used to construct the magnetic phase diagram of the FeCr₂S₄–(Cu_0.5In_0.5)Cr₂S₄ system. The largest area in the phase diagram is occupied by the FeCr₂S₄ ferrimagnet field (x = 0.28–1), in which there are two types of reentrant spin glass: RSG₁ and RSG₂. The phase field second in area in the phase diagram is that of spin glass, SG₁ (x ≈ 0.03–0.28). Antiferromagnet-based compositions have the smallest area in the phase diagram (x = 0–0.2).

中文翻译：

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Fe x（Cu 0.5 In 0.5）1 – x Cr 2 S 4固溶体的磁相图

摘要

我们已合成的Fe _X（铜_0.5在_0.5）_{1 - X}的Cr ₂小号_4个的固溶体并测量其磁化强度和动态磁化率为室温和液体氦温度在弱磁场之间温度的函数ħ = 100奥斯特和Н _〜在10、100、1000和10000 Hz频率下= 1 Oe。结果已用于构造FeCr ₂ S ₄ –（Cu _0.5 In _0.5）Cr ₂ S ₄的磁相图。系统。相图中最大的区域是FeCr ₂ S ₄铁磁磁场（x = 0.28-1），其中存在两种类型的折返旋转玻璃：RSG ₁和RSG ₂。在相图区域中的相位区第二个是，自旋玻璃，SG ₁（X ≈0.03-0.28）。在相图中，基于反铁磁体的成分面积最小（x = 0–0.2）。