Structural and Optical Studies on Metallization of Oxygen
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Powder x-ray diffraction and infrared absorption experiments of solid oxygen at room temperature have been carried out up to 151 GPa and 60 GPa, respectively. The structural transition from the ε to ζ phase observed at 96 GPa in our previous experiment was reproduced. Stability of the ζ phase was confirmed up to 151 GPa. In infrared absorption experiments with a single-crystal of the ε phase, the IR-active vibron fundamental around 1500 cm<SUP>-1</SUP> split into at least three bands. The pressure dependence of frequence of the IR vibron fundamentals had a minimum at 20 GPa and above 30 GPa showed positive pressure coefficients between 1. 2-1. 7 cm<SUP>-1</SUP>/GPa.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 7, 781-783, 1998
The Japan Society of High Pressure Science and Technology