| 钼酸钆晶体的结构及喇曼光谱研究 |
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| 引用本文： | 孙会芳,余曰丙鲲,侯怀宇,尤静林,蒋国昌,袁清习,潘守夔. 钼酸钆晶体的结构及喇曼光谱研究[J]. 上海大学学报(自然科学版), 2001, 7(4): 374-376 |
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| 作者姓名： | 孙会芳 余曰丙鲲 侯怀宇 尤静林 蒋国昌 袁清习 潘守夔 |
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| 作者单位： | 上海大学;上海大学 |
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| 基金项目： | 国家自然科学基金(59832080,59874016)资助项目 |
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| 摘 要： | 全面介绍了钼酸钆晶体的结构及相变情况;对其常温喇曼光谱进行了测试和详细分析,对各谱峰进行了识别和指认,指出实验中仅能观察到两条MoO4^2-离子的对称伸缩振动谱线是因两种Mo-O键长相近的MoO4^2-离子振动模的简并造成的,反对称伸缩振动模式大的光谱分裂范围是因晶胞中MoO4^2-离子数目较多和较强的层间耦合造成的。
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| 关 键 词： | 相变 喇曼光谱 伸缩振动模式 弯曲振动模式 |
| 文章编号： | 1007-2861(2001)04-0374-03 |
| 修稿时间： | 2001-04-17 |
Study on Structure and Raman Spectra of Gd_2(MoO_4)_3 Crystal |
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| SUN Hui fang ,YU Bing kun ,HOU Huai yu ,YOU Jing lin JIANG Guo chang ,YUAN Qing xi ,PAN Shou kui. Study on Structure and Raman Spectra of Gd_2(MoO_4)_3 Crystal[J]. Journal of Shanghai University(Natural Science), 2001, 7(4): 374-376 |
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| Authors: | SUN Hui fang YU Bing kun HOU Huai yu YOU Jing lin JIANG Guo chang YUAN Qing xi PAN Shou kui |
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| Affiliation: | SUN Hui fang 1,YU Bing kun 1,HOU Huai yu 2,YOU Jing lin 2 JIANG Guo chang 2,YUAN Qing xi 3,PAN Shou kui 3 |
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| Abstract: | Structure and phase transition of Gd 2(MoO 4) 3 crystal are reported. Raman spectra of the crystal is observed and analysed at room tempertrue. Identification and assignment of its vibrational modes are completed. That only two Raman lines of the symmetric streching mode were observed is due to an accidental degeneracy between 2 sets of MoO 4 2- ions whose Mo-O distances are closed. The large splitting observed for the asymmetric streching mode is probably due to the large number of MoO 4 2- ions and strong interlayer coupling present in the unit cell. |
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| Keywords: | phase transition Raman spectra streching vibrational mode bending vibrational mode |
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