Abstract A Series of LuMn1−xRuxO3 (0 ≤ x ≤ 0.3) samples were prepared by traditional solid-state reaction method. The interactions between Ru3+ (with 4d electrons) and Mn3+ (with 3d electrons) on the structure and magnetic properties of LuMn1−xRuxO3 were investigated. The results of structural investigation reveal that samples crystallize in a single hexagonal structure with P63cm group for LuMn1−xRuxO3 samples with x ≤ 0.1. The change of Mn–O bond lengths and Mn–O–Mn bond angles indicates the trimerization of Mn3+ ions is weakened and the tilting angle of MnO5 bipyramids is decreased. The temperature dependence on magnetization M(T) curves prove that weak ferromagnetism (FM) exists in the samples. Meanwhile, the antiferromagnetic (AFM) transition temperature TN of LuMn1-xRuxO3 samples is enhanced by the Ru doping. The weak FM is resulted from the alteration of frustrated magnetic structure, while the enhancement of AFM coupling is ascribed to the strong super-exchange Ru3+–O2−–Ru3+ and Ru3+–O2−–Mn3+ interaction by Ru3+ doping. This paper provides an important reference of 4d ion doping in LuMnO3.

中文翻译：

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Ru掺杂H-LuMnO3的结构畸变和磁性能

摘要 采用传统固相反应法制备了一系列LuMn1−xRuxO3 (0 ≤ x ≤ 0.3) 样品。研究了 Ru3+（具有 4d 电子）和 Mn3+（具有 3d 电子）之间对 LuMn1−xRuxO3 结构和磁性的相互作用。结构研究结果表明，对于 x ≤ 0.1 的 LuMn1−xRuxO3 样品，样品结晶为具有 P63cm 基团的单一六方结构。Mn-O键长和Mn-O-Mn键角的变化表明Mn3+离子的三聚作用减弱，MnO5双锥体的倾角减小。温度对磁化 M(T) 曲线的依赖性证明样品中存在弱铁磁性 (FM)。同时，Ru 掺杂提高了 LuMn1-xRuxO3 样品的反铁磁 (AFM) 转变温度 TN。弱FM是受挫磁结构改变的结果，而AFM耦合的增强归因于Ru3+掺杂产生的强超交换Ru3+–O2−–Ru3+和Ru3+–O2−–Mn3+相互作用。该论文为LuMnO3中4d离子掺杂提供了重要参考。