New high-pressure structural transition of oxygen at 96 GPa associated with metallization in a molecular solid.

作者: Yuichi Akahama , Haruki Kawamura , Daniel Häusermann , Michael Hanfland , Osamu Shimomura

DOI: 10.1103/PHYSREVLETT.74.4690

关键词: IsostructuralMolecular solidMonoclinic crystal systemMaterials scienceOxygenSynchrotron radiationAnalytical chemistryLattice constantSynchrotron Radiation SourceSolid oxygen

摘要: By using a high-energy and high-brilliance synchrotron radiation source in the European Synchrotron Radiation Facility 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 96 explained as isostructural with discontinuous change lattice constants monoclinic cell. Metallization reported by Desgreniers, Vohra, Ruoff [J. Phys. Chem. 94, 1117 (1990)] is ascribed transition.

参考文章(21)
Jon H. Eggert, Fred Moshary, William J. Evans, Hector E. Lorenzana, Kenneth A. Goettel, Isaac F. Silvera, William C. Moss, Absorption and reflectance in hydrogen up to 230 GPa: Implications for metallization. Physical Review Letters. ,vol. 66, pp. 193- 196 ,(1991) , 10.1103/PHYSREVLETT.66.193
M. Hanfland, R. J. Hemley, H. K. Mao, Optical absorption measurements of hydrogen at megabar pressures. Physical Review B. ,vol. 43, pp. 8767- 8770 ,(1991) , 10.1103/PHYSREVB.43.8767
Arthur L. Ruoff, Craig A. Vanderborgh, Hydrogen reduction of ruby at high pressure: Implication for claims of metallic hydrogen. Physical Review Letters. ,vol. 66, pp. 754- 757 ,(1991) , 10.1103/PHYSREVLETT.66.754
Serge. Desgreniers, Yogesh K. Vohra, Arthur L. Ruoff, Optical response of very high density solid oxygen to 132 GPa The Journal of Physical Chemistry. ,vol. 94, pp. 1117- 1122 ,(1990) , 10.1021/J100366A020
Malcolm Nicol, K.R. Hirsch, Wilfried B. Holzapfel, Oxygen phase equilibria near 298 K Chemical Physics Letters. ,vol. 68, pp. 49- 52 ,(1979) , 10.1016/0009-2614(79)80066-4
H. D'Amour, W. B. Holzapfel, M. Nicol, Solid oxygen near 298 K. The structure of .beta.-oxygen and identification of a new .epsilon. phase The Journal of Physical Chemistry. ,vol. 85, pp. 130- 131 ,(1981) , 10.1021/J150602A003
D. Schiferl, D. T. Cromer, L. A. Schwalbe, R. L. Mills, Structure of 'orange' 18O2 at 9.6 GPa and 297 K Acta Crystallographica Section B-structural Science. ,vol. 39, pp. 153- 157 ,(1983) , 10.1107/S0108768183002219
D. Schiferl, S. W. Johnson, A. S. Zinn, High-temperature/high-pressure X-ray diffraction: Recent developments High Pressure Research. ,vol. 4, pp. 293- 295 ,(1990) , 10.1080/08957959008246100
S. W. Johnson, M. Nicol, D. Schiferl, Algorithm for sorting diffraction data from a sample consisting of several crystals enclosed in a sample environment apparatus Journal of Applied Crystallography. ,vol. 26, pp. 320- 326 ,(1993) , 10.1107/S0021889892008422