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首页> 外文期刊>Crystallography reports >Topology and symmetry analysis of the Sr _2VO(VO _4) _2 family exhibiting magnetic properties and prediction of structures with different orderings of vanadyl bonds
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Topology and symmetry analysis of the Sr _2VO(VO _4) _2 family exhibiting magnetic properties and prediction of structures with different orderings of vanadyl bonds

机译：呈现磁性的Sr _2VO（VO _4）_2族的拓扑和对称性分析及对钒氧键不同序结构的预测

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摘要

A topology and symmetry analysis of structures of the Sr-vanadyl-vanadate family Sr2VO(VO _4) _2 with a quasi-one-dimensional spin system, which is responsible for magnetic properties, is performed. Based on the known structure with space group I2/a, structures belonging to its subgroups with ordered vanadyl bonds in octahedra containing the magnetic V ~(+4) ion are derived. Structures with a polar orientation of vanadyl bonds in chains of octahedra correspond to space groups P2 _1/c, P2/c, and Pc, and structures with a nonpolar orientation of vanadyl bonds correspond to space groups P2/a, P2, and P2. Variants of disorder ing of vanadyl bonds over two directions, namely, along the b and a axes, are considered for all structures. The predicted structures can be used for the diagnostics of phases obtained in this family and as initial information necessary for studies of magnetic properties of crystals.
机译：对具有磁性的准一维自旋系统，对钒酸钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒钒酸锶基Sr2VO（VO_4）_2的结构进行了拓扑和对称分析。根据已知的具有空间基团I2 / a的结构，推导属于八面体中具有磁性V〜（+4）离子的具有有序的钒基键的亚组的结构。八面体链中具有钒氧键极性取向的结构对应于空间基团P2 _1 / c，P2 / c和Pc，具有钒氧键非极性取向的结构对应于空间组P2 / a，P2和P2 / 。对于所有结构，均考虑了钒基键在两个方向（即沿b和a轴）的无序排列。预测的结构可用于对该族中获得的相的诊断，并可作为研究晶体磁性的必要信息。

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