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AV_6O_11(A为碱金属或碱土金属)型结构化合物令人感兴趣的是其结构上3+和4+离子的分布及转换和其性能上表现出的金属导电性及铁磁性.研究这类物质的结构对了解和改善其性能,研究材料化学一般规律都有很重要的意义.De Roy等采用电解方法首次合成NaV_6O_11,并确定了其晶体结构,但其空间群后来被证实是错误的.Kanke等得到了SrV_6O_11及V离子被Ti,Cr和Fe等部分取代的化合物的晶体结构和X射线粉末衍射数据,以求了解不同取代离子对晶体结构和性能的影响;后来又通过SrV_6O_11,NaV_6O_11单晶样品得到了各自的晶体结构.最近,Kanke等通过X射线单晶衍射和中子衍射方法揭示了
AV_6O_11 (A is an alkali metal or alkaline earth metal) type structural compound is of interest for the distribution and conversion of 3 + and 4+ ions in its structure and the metal conductivity and the ferromagnetism exhibited by its properties. Structure to understand and improve its performance, study the general laws of materials chemistry are of great significance.De Roy et al use of electrolysis method for the first time synthesis of NaV_6O_11, and to determine the crystal structure, but the space group was later proved to be wrong.Kanke Obtained SrV 6 O 11 and V ions by Ti, Cr and Fe partially substituted compounds such as crystal structure and X-ray powder diffraction data in order to understand the different substituted ions on the crystal structure and properties; and later by SrV_6O_11, NaV_6O_11 single crystal The samples obtained their respective crystal structures.Recently, Kanke et al. Revealed by X-ray single crystal diffraction and neutron diffraction methods