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Phys. Rev. Lett. 85, 4896–4899 (2000)

Ba-IV-Type Incommensurate Crystal Structure in Group-V Metals

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M. I. McMahon, O. Degtyareva*, and R. J. Nelmes
Department of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom

Received 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

*On leave from FB 6 Physik, Universitaet-Paderborn, 33095 Paderborn, Germany.