分别利用因子群对称分析法和位置群对称分析法对Ca3(BO3)2晶体的振动模式进行了理论分析.Ca3(BO3)2的晶格振动模式分为外振动和内振动模式,外振动模式为:3A1g+4A2g+7Eg+3A1u+3A2u+6Eu,内振动模式为:2A1g+2A2g+4Eg+2A1u+2A2u+4Eu.Ca3(BO3)2晶体在布里渊区中心Γ点晶格振动的对称性分类为:5A1g+6A2g+11Eg+5A1u+6A2u+11Eu,其中声学模为:A2u+Eu,拉曼活性光学模为:5A1g+11Eg,红外活性光学模为:5A2u+10Eu,其余为非拉曼、非红外活性光学振动模.用高温固相法成功合成了Ca3(BO3)2粉末,测量了它的室温Raman光谱,并利用群论分析的结果对谱图进行了讨论,指认了BO3-3基团的特征振动频率.
参考文献
| [1] | Zhang Shuyu,Wu Xing,Song Youting,et al.Growth of birefringent Ca3(BO3)2 crystals by the Czochralski method[J].Journal of Crystal Growth,2003,252:246-250. |
| [2] | Schuckmann W.Zur Kristallstruktur des Calcium-Borates Ca3(BO3)2[J].Neues Jahr.Mineral.Monatsh.,1969,3:142-143. |
| [3] | Vegas A,Cano F H,Garcia-Blanco S.The crystal structure of calcium orthoborate:a redetermination[J].Acta Cryst.,1975,B31:1416-1419. |
| [4] | Majling J,Figusch V,Hanic F,et al.Crystal data and thermal expansion of tricalciumborte[J].Mat.Res.Bull.,1974,9:1379-1382. |
| [5] | Lu Xiuai,You Zhenyu,Li Jianfu,et al.Growth and properties of pure and rare earth-doped Ca3(BO3)2 single crystal[J].Journal of Crystal Growth,2005,281:416-425. |
| [6] | Lu Xiuai,You Zhenyu,Li Jianfu,et al.Optical transition properties of the Nd3+ ions in Ca3(BO3)2 crystal[J].Phys.Stat.Sol.(a),2006,203:551-557. |
| [7] | Zhang Guangyin,Lan Guoxiang.Lattice Vibrational Spectroscopy (晶格振动光谱学)[M].Beijing:High Education Press,1991:57-74 (in Chinese). |
| [8] | Fang Rongchuan.Solid-state Spectroscopy (固体光谱学)[M].Hefei:Press of University of Science and Technology of China,2003:329-350 (in Chinese). |
| [9] | Bethell D E,Sheppard N.The infrared spectrum and structure of boric acid[J].Transactions of the Faraday Society,1955,51:9-15. |
| [10] | Steele W C,Decius J C.Infrared absorption of lanthanum,scandium and indium borate and the force constants of borate ion[J].Journal of Chemical Physics,1956,25:1184-1188. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%