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Phys. Rev. Lett. 88, 135701 (2002) [4 pages]

Osmium has the Lowest Experimentally Determined Compressibility

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Hyunchae Cynn, John E. Klepeis, Choong-Shik Yoo, and David A. Young
Lawrence Livermore National Laboratory, University of California, Livermore, California 94550

Received 8 June 2001; published 14 March 2002

See accompanying Physics Focus

On the basis of high pressure diamond-anvil compression studies for the precious metals Ru, Ir, and Os we report the surprising discovery that metallic osmium has a lower compressibility than covalently bonded diamond. We also find that Ir and Ru are as incompressible as Re. In addition, we have performed first principles calculations that confirm the trend in the measured transition metal compressibilities.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.135701
DOI:
10.1103/PhysRevLett.88.135701
PACS:
64.30.+t, 31.15.Ar