Phys. Rev. Lett. 74, 4690–4693 (1995)New High-Pressure Structural Transition of Oxygen at 96 GPa Associated with Metallization in a Molecular SolidReceived 19 January 1995; published in the issue dated 5 June 1995 By using a high-energy and high-brilliance synchrotron radiation source in the European Synchrotron Radiation Facility and the Photon Factory, an angle-dispersive powder x-ray diffraction study of solid oxygen has been carried out up to 116 GPa at room temperature. A new high-pressure structural transition was observed at 96 GPa and explained as an isostructural transition with a discontinuous change in lattice constants in a monoclinic cell. Metallization of oxygen reported by Desgreniers, Vohra, and Ruoff [J. Phys. Chem. 94, 1117 (1990)] is ascribed to the transition. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.4690
DOI:
10.1103/PhysRevLett.74.4690
PACS:
62.50.+p, 61.10.-i, 64.70.Kb, 71.30.+h
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