Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russia.
J Phys Condens Matter. 2013 Jan 16;25(2):025802. doi: 10.1088/0953-8984/25/2/025802. Epub 2012 Nov 28.
The structural, magnetic, and thermophysical properties of cation-substituted sulfides Gd(X)Mn(1-X)S (0.04 ≤ X ≤ 0.25) with the NaCl-type face-centered cubic lattice have been investigated. The range of existence of long-range antiferromagnetic order has been established. The anomalies observed in the temperature dependence of the specific heat correspond to the temperatures of the magnetic phase transition. The anomaly in the specific heat caused by electron transitions between the 4f levels and d band states has been observed. It has been found that the coefficient of thermal expansion decreases with increasing concentration of substituents in the magnetically ordered region and remains nearly invariable in the paramagnetic phase.
已经研究了具有 NaCl 型面心立方晶格的阳离子取代硫化物 Gd(X)Mn(1-X)S（0.04 ≤ X ≤ 0.25）的结构、磁性和热物理性质。已经确定了长程反铁磁有序的存在范围。在比热的温度依赖性中观察到的异常对应于磁相变的温度。已经观察到 4f 能级和 d 带态之间的电子跃迁引起的比热异常。发现热膨胀系数随着磁性有序区域中取代剂浓度的增加而减小，而在顺磁相几乎保持不变。
