| EUGENE GREGORYANZ1,
2, 5, CHRYSTELE SANLOUP3,
M. SOMAYAZULU4,
JAMES BADRO1,
GUILLAUME FIQUET1,
HO-KWANG MAO2 and
RUSSELL J. HEMLEY2
1 Université Pierre
et Marie Curie, LMCP, case 115, 4 place Jussieu, Paris,
France
2 Geophysical Laboratory, Carnegie
Institution of Washington, 5251 Broad Branch Road NW,
Washington DC 20015, USA
3 Université Pierre et Marie Curie,
Laboratoire Magie, case 110, 4 place Jussieu, Paris,
France
4 HPCAT, Carnegie Institution of Washington,
APS, 9700 South Cass Avenue, Argonne, Illinois 60439,
USA
5 Currently at: Geophysical Laboratory,
Carnegie Institution of Washington, 5251 Broad Branch
Road, NW, Washington, DC 20015, USA
Correspondence to:
EUGENE GREGORYANZ e.gregoryanz@gl.ciw.edu
Nature Materials
AOP Published online: 25 April
2004 | doi:10.1038/nmat1115 |
|
There has been considerable interest in the synthesis of
new nitrides because of their technological and
fundamental importance. Although numerous metals
react with nitrogen there are no known binary nitrides
of the noble metals. We report the discovery and
characterization of platinum nitride (PtN), the first
binary nitride of the noble metals group. This compound
can be formed above 45–50 GPa and temperatures exceeding
2,000 K, and is stable after quenching to room pressure
and temperature. It is characterized by a very high
Raman-scattering cross-section with easily observed
second- and third-order Raman bands. Synchrotron X-ray
diffraction shows that the new phase is cubic with a
remarkably high bulk modulus of 372( 5)
GPa.
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