Magnetic structures of nearly isostructural Tb3RuO7 and Nd3RuO7: Appearance of a partially disordered state only in the Tb compound
Magnetic structures of nearly isostructural Tb3RuO7 and Nd3RuO7: Appearance of a partially disordered state only in the Tb compound
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几乎同构的 Tb3RuO7 和 Nd3RuO7 的磁性结构：仅在 Tb 化合物中出现部分无序状态
DOI：
10.1103/physrevb.104.214430
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
and V. Yu. Pomjakushin
中科院分区：
文献类型：
--
作者：
M. Hase;A. Doenni;and V. Yu. Pomjakushin
我们报道了用粉末中子衍射实验测定的磁结构。在In中，形成了交替键自旋-Ru1-Ru2链。在15℃以下，Ru1和Ru2磁矩分别是有序的和无序的(顺磁)。这一结果表明出现了部分无序(PD)态，尽管这两个Ru位彼此非常相似。在In中，Ru1和Ru2离子形成独立的均一链。Ru_1和Ru_2的磁矩都在17.5℃以下，Pd态的主要来源可能是交换作用中的磁阻。Ru1位Tb有序矩产生的内部磁场与Ru2位Tb有序矩产生的内部磁场不同。我们推测，不同的(不均匀的)内部磁场增强了Ru1和Ru2矩之间的性质差异。我们还报道了和的磁熵变化。
We report on the magnetic structures ofanddetermined from powder neutron-diffraction experiments. In, alternating-bond spin-Ru1-Ru2 chains are formed. The Ru1 and Ru2 moments are ordered and disordered (paramagnetic), respectively, below 15 K. This result indicates the appearance of a partially disordered (PD) state, although the two Ru sites are very similar to each other. In, the Ru1 and Ru2 ions form independent uniform chains. Both the Ru1 and Ru2 moments are ordered below 17.5 K. Probably, the main source of the PD state inis the magnetic frustration in the exchange interactions. The internal magnetic field generated by the Tb ordered moments at the Ru1 sites is different from that at the Ru2 sites. We speculate that the different (nonuniform) internal magnetic field enhances the difference in the properties between the Ru1 and Ru2 moments. We also report on the magnetic entropy changes ofand.