Study of Ice Ⅶ Structure Influenced by High Pressure Using Raman Spectrum
JIA Li-hua1, 2, WANG Yi-ding2, MEN Zhi-wei3, QU Guan-nan3, LI Zuo-wei1*, HE Li-qiao3*
1. State Key Laboratory of Superhard Materials，Jilin University，Changchun 130012，China 2. College of Electronic Science and Engineering，Jilin University，Changchun 130012，China 3. College of Physics，Jilin University，Changchun 130012，China
Abstract：Raman spectra of ice Ⅶ phase were obtained at room temperature when the pressure was from 2.5 to 23 GPa. The experimental results indicate that the oxygen atoms distance do-o of ice decreased with pressure increasing, which results in that hydrogen bond is shortened, O—H bond is lengthened, force constant is reduced, and Raman spectra are red shifted. The orientation order of proton (hydrogen atom) is first increased and then decreased with varying the pressure，which leads to the Raman intensity increasing and then decreasing, and Raman linewidth is decreased and then increased, and the linewidth is the least when the pressure is 13 GPa.
贾丽华1, 2，王一丁2，门志伟3，曲冠男3，里佐威1*，何丽桥3* . 压强对冰Ⅶ相结构影响的拉曼光谱研究[J]. 光谱学与光谱分析, 2012, 32(05): 1259-1261.
JIA Li-hua1, 2, WANG Yi-ding2, MEN Zhi-wei3, QU Guan-nan3, LI Zuo-wei1*, HE Li-qiao3* . Study of Ice Ⅶ Structure Influenced by High Pressure Using Raman Spectrum. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(05): 1259-1261.
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