| 压强对冰Ⅶ相结构影响的拉曼光谱研究 |
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| 作者姓名： | Jia LH Wang YD Men ZW Qu GN Li ZW He LQ |
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| 作者单位： | 吉林大学超硬材料国家重点实验室;吉林大学电子科学与工程学院;吉林大学物理学院 |
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| 基金项目： | 国家自然科学基金项目(10974067,11104106);吉林省科技厅项目(20101508,201101037,201115033);中国博士后科学基金面上项目(20100481062);吉林大学研究生创新项目(20111025)资助 |
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| 摘 要： | 测量了室温下2.5～23GPa压强下冰Ⅶ相的拉曼光谱。测量结果表明:随压强增加,冰的氧原子间距离dO—O减小,使氢键长度变短,导致O—H化学键键长增加,力常数减小,拉曼光谱发生红移。质子(氢核)取向有序性随压强先增加而后减小致使拉曼光谱强度先增加而后减小;拉曼光谱线宽先减小而后增加,当压强约为13GPa时呈现最小值。
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| 关 键 词： | 冰Ⅶ相 氢键 拉曼光谱 |
Study of ice VII structure influenced by high pressure using Raman spectrum |
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| Jia LH,Wang YD,Men ZW,Qu GN,Li ZW,He LQ.Study of ice VII structure influenced by high pressure using Raman spectrum[J].Spectroscopy and Spectral Analysis,2012,32(5):1259-1261. |
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| Authors: | Jia Li-hua Wang Yi-ding Men Zhi-wei Qu Guan-nan Li Zuo-wei He Li-qiao |
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| Institution: | State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China. jialh@jlu.edu.cn |
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| 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. |
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| Keywords: | Ice Ⅶ Hydrogen bond Raman scattering |
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