The structural and magnetic properties are studied for a series of double perovskite compounds Ln₂CuRuO₆ (Ln = Nd, Sm) synthesized by solid state reaction method. The analysis of structure shows La³⁺ is replaced by the smaller rare-earth ions Nd³⁺ and Sm³⁺, forming in monoclinic P2₁/n structure, which results in severe deformation of the Cu–O–Ru bond angle. In addition, the decrease of Cu–O–Ru bond angles and the simultaneous enhancement of magnetic interactions lead to higher transition temperature than that of La₂CuRuO₆. The consistent trends of the antisite defects and the upturn rate of the magnetic curves indicate that the antisite defects may play an important role on the magnetization at low temperature.

研究了通过固相反应法合成的一系列钙钛矿型双重化合物Ln ₂ CuRuO ₆（Ln = Nd，Sm）的结构和磁性。结构分析表明，La ³⁺被较小的稀土离子Nd ³⁺和Sm ³⁺取代，形成单斜P2 ₁ / n结构，导致Cu-O-Ru键角发生严重变形。另外，Cu-O-Ru键角的减小和磁相互作用的同时增强导致比La ₂ CuRuO ₆更高的转变温度。。反位缺陷的一致趋势和磁曲线的上升速率表明，反位缺陷可能在低温下对磁化起重要作用。