Abstract

Substitutional solid solutions Mn_1 – xFe_xNiGe (0.05 ≤ x ≤ 1.00) were synthesized. X-ray and neutron diffraction methods were used to study their crystal structure in the temperature range of 20–300 K. A phase transition from the hexagonal structure of the Ni₂In type into the orthorhombic structure (space group Pnma) was found at T = 200 K. Magnetic properties of the obtained compounds were also studied in the temperature range of 5–300 K and in external magnetic field up to 10 T. A decrease in the magnetic order–magnetic disorder phase transition point from 272 to 132 K was revealed as the concentration x grows from 5 to 30 mol %.

中文翻译：

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Mn 1 – x Fe x NiGe固溶体的晶体结构和磁特性

摘要

取代的固体溶液的Mn _{1 -  X}铁_X的NiGe（0.05≤ X ≤1.00）的合成。使用X射线和中子衍射方法研究了它们在20–300 K的温度范围内的晶体结构。在T处发现了Ni ₂ In型六方结构到正交晶结构（空间群Pnma）的相变。= 200K。还在5–300 K的温度范围和高达10 T的外部磁场中研究了所得化合物的磁性。当浓度x从5到30 mol％增长时显示。