A transformation of carbon dioxide to nonmolecular solid at room temperature and high pressure

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作者：
Kume, Tetsuji [1 ]
Ohya, Yasuhisa [2 ]
Nagata, Masayuki [1 ]
Sasaki, Shigeo [2 ]
Shimizu, Hiroyasu [2 ]
机构：
[1] Department of Materials Science and Technology, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
[2] Environmental and Renewable Energy Systems, Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
来源：
Journal of Applied Physics | 2007年 / 102卷 / 05期
关键词：
Raman and infrared absorption spectra of solid carbon dioxide (C O2) have been measured at high pressures up to 80 GPa and room temperature. The broadening and weakening of lattice vibrational signals and the disappearance of molecular vibration were detected at 65 GPa by means of the Raman and infrared absorption experiments; respectively. The present Raman spectral feature is exactly the same as that of amorphous C O2 synthesized around 600 K and 60 GPa [M. Santoro; Nature; (London); 441; 857 (2006)]. It is demonstrated that the polymerization of C O2 proceeds even at room temperature and almost independently of temperature. © 2007 American Institute of Physics;
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