Abstract—

We have synthesized Fe_{1 – x}Ag_xCr₂S₄ (0 < x < 0.5) solid solutions via doping of the FeCr₂S₄ thiochromite with silver. From a break in the composition dependence of the unit-cell parameter for the synthesized materials, the solid solution series has been shown to be limited by x = 0.22. The magnetic properties of the solid solutions have been studied at temperatures from 4 to 300 K in a magnetic field H = 3980 A/m (50 Oe). All of the materials have been shown to be ferrimagnets with a Curie temperature rising with silver concentration: from 185 K at x = 0 to 203 K at x = 0.22. We have determined saturation magnetic moments of the solid solutions and proposed a model that accounts for their observed magnetic properties.

中文翻译：

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掺银四硫化铁二铬的合成及磁性能

摘要-

我们通过用银掺杂FeCr ₂ S _4亚铬铁矿合成了Fe _{1 – x} Ag _x Cr ₂ S ₄（0 < x <0.5）固溶体。从合成材料的晶胞参数的成分依存性的突破来看，固溶体系列受x = 0.22的限制。在磁场H = 3980 A / m（50 Oe）下，在4至300 K的温度下研究了固溶体的磁性。所有材料都显示为具有居里温度的Ferimagnets，其居里温度随银浓度的升高而升高：从x = 0的185 K到x = 0的203 Kx＝ 0.22。我们已经确定了固溶体的饱和磁矩，并提出了一个模型，该模型考虑了它们所观察到的磁性能。