Structures and transitions in solid O2 to 13 GPa at 298 K by x-ray diffraction

The structures and phase transitions in solid O2 were studied at 298 K from 6 to 13 GPa using powder x-ray diffraction in an anvil cell. Pressures were determined from the compression of in situ NaF. X-ray photographs at various pressures showed patterns from five different phases of O2, two of whic...

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Bibliographic Details
Published in:The Journal of chemical physics 1984-12, Vol.81 (11), p.5068-5073
Main Authors: OLINGER, B, MILLS, R. L, ROOF, R. B. JR
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Crystalline state (including molecular motions in solids)
Crystallographic aspects of phase transformations
pressure effects
Exact sciences and technology
Physics
Structure of solids and liquids
crystallography
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Summary:The structures and phase transitions in solid O2 were studied at 298 K from 6 to 13 GPa using powder x-ray diffraction in an anvil cell. Pressures were determined from the compression of in situ NaF. X-ray photographs at various pressures showed patterns from five different phases of O2, two of which were previously unreported. Values of the bulk modulus and volume were derived up to 11 GPa where transition to ε-O2 occurs. A compromise fit to all available data indicates that ε-O2 may be an orthorhombic distortion of δ-O2.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.447495