Laboratoire de Réactivité et Chimie des Solides (LRCS), Université de Picardie Jules Verne , CNRS UMR 7314, 33 rue Saint Leu, 80039 Amiens cedex, France.
Inorg Chem. 2013 Sep 16;52(18):10456-66. doi: 10.1021/ic401280e. Epub 2013 Aug 26.
New materials initially designed for battery electrodes are often of interest for magnetic study, because their chemical compositions include 3d transition metals. We report here on the magnetic properties of marinite phases Li2M(SO4)2 (M = Fe, Co, Mn) and Li1Fe(SO4)2, which all order antiferromagnetically at low temperature. From neutron powder diffraction, we propose a model for their ground-state magnetic structures. The magnetism of marinite Li2M(SO4)2 compounds unambiguously results from super-super-exchange interactions; therefore, these materials can be considered as a model case for which the Goodenough-Kanamori-Anderson rules can be tested.
最初设计用于电池电极的新材料通常因其化学组成中包含 3d 过渡金属而引起人们对其磁性研究的兴趣。我们在此报告了方钴矿相 Li2M(SO4)2（M = Fe、Co、Mn）和 Li1Fe(SO4)2 的磁性，它们在低温下均反铁磁有序。通过中子粉末衍射，我们提出了它们基态磁结构的模型。方钴矿 Li2M(SO4)2 化合物的磁性显然源自超超交换相互作用；因此，这些材料可以被视为一个模型案例，可以用来检验古迪纳夫-坎纳安-安德森定则。
