Acentric Pseudo-Kagome Structures: The Solid Solution (Co1–xNix)3Sb4O6F6
Acentric Pseudo-Kagome Structures: The Solid Solution (Co1–xNix)3Sb4O6F6
复制标题
无心赝戈薇结构：固溶体 (Co1–xNix)3Sb4O6F6
DOI：
10.1021/cm500339z
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发表时间：
2014
影响因子：
8.6
通讯作者：
A. Möller
中科院分区：
文献类型：
--
作者：
Shichao Hu;M. Johnsson;P. Lemmens;D. Schmid;D. Menzel;J. Tapp;A. Möller
采用水热法制备了（Co 1-xNix）3Sb 4 O 6 F6固溶体化合物。化合物属于非中心对称立方空间群I43 m，晶胞参数a = 8.176（1）A（M = Co）和a = 8.0778（1）A（M = Ni）。晶体结构由经由氟原子的角共享[MO 2F 4]八面体组成。[Sb 4 O 6 E4]超四面体（T2）由四个[SbO 3E]基团（E是Sb上的立体化学活性孤对）组成，与[MO 2F 2]n网络共享O原子。磁有序现象观察到的两个特征温度，TN和T*，在67至170 K的范围内，逐渐演变的组成和崩溃的M = Co（x = 0）到一个过渡。TN被分配到一个过渡到一个长程有序的反铁磁相，和T* 标记的温度在45至65 K的范围内，其中场冷却（FC）和零场冷却（ZFC）的磁化率分裂。后者是暂时归因于一个倾斜的自旋时刻。
Compounds within the solid solution (Co1–xNix)3Sb4O6F6 were prepared by the hydrothermal method. The compounds crystallize in the noncentrosymmetric cubic space group I 43m with unit cell parameters a = 8.176(1) A for M = Co and a = 8.0778(1) A for M = Ni. The crystal structure is made up by corner sharing [MO2F4] octahedra via the fluorine atoms. [Sb4O6E4] supertetrahedra (T2) consisting of four [SbO3E] groups (E being the stereochemically active lone-pair on Sb) that share O atoms with the [MO2F2]n network. Magnetic ordering phenomena are observed with two characteristic temperatures, TN and T*, in the range from 67 to 170 K, that evolve gradually with composition and collapse for M = Co (x = 0) to one transition. TN is assigned to a transition into a long-range ordered antiferromagnetic phase, and T* marks a temperature in the range of 45 to 65 K where field cooled (FC) and zero field cooled (ZFC) susceptibility splits. The latter is tentatively attributed to a canting of the spin moments.