Ba-IV-type incommensurate crystal structure in group-V metals
Ba-IV-type incommensurate crystal structure in group-V metals
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DOI：
10.1103/physrevlett.85.4896
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发表时间：
2000-12-04
影响因子：
8.6
通讯作者：
Nelmes, RJ
中科院分区：
文献类型：
--
作者：
McMahon, MI;Degtyareva, O;Nelmes, RJ
长期未知的Bi-III晶体结构已经得到解决。它包括一个体心四面体（bct）“主体”和一个bet“客体”组分，该组分由位于主体通道中的链组成;客体与主体沿着四面体轴不相称。Sb-II的衍射数据表明，它也可以与相同的复合结构拟合。Bi和Sb这两个高压相的结构与最近报道的碱土金属Ba和Sr的结构相似。
The long-unknown crystal structure of Bi-III has been solved. It comprises a body-centend-tetragonal (bct) "host" and a bet "guest" component made up of chains that lie in channels in the host; the guest is incommensurate with the host along the tetragonal c axis. Diffraction data for Sb-II reveal that it too can be fitted with the same composite structure. The structures of these two high-pressure phases of Bi and Sb are similar to those reported recently in the alkaline-earth metals Ba and Sr.