Phys. Rev. Lett. 85, 4896–4899 (2000)Ba-IV-Type Incommensurate Crystal Structure in Group-V MetalsReceived 23 May 2000; published in the issue dated 4 December 2000 The long-unknown crystal structure of Bi-III has been solved. It comprises a body-centered-tetragonal (bct) “host” and a bct “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. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.4896
DOI:
10.1103/PhysRevLett.85.4896
PACS:
61.50.Ks, 62.50.+p
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