| 反斯托克斯拉曼光谱在BaTiO_3铁电相变研究中的应用 |
| |
| 引用本文： | 蒋毅坚,李黎明.反斯托克斯拉曼光谱在BaTiO_3铁电相变研究中的应用[J].光散射学报,1999,11(2):77-80. |
| |
| 作者姓名： | 蒋毅坚 李黎明 |
| |
| 作者单位： | 北京工业大学应用物理系 |
| |
| 基金项目： | 国家自然科学基金,北京市“科技新星计划”资助项目 |
| |
| 摘 要： | 从理论上讨论了一阶和二阶斯托克斯与反斯托克斯拉曼散射截面的温度依赖关系；在２９３Ｋ至４０１Ｋ的温度范围内，测量了ＢａＴｉＯ３单晶斯托克斯和反斯托克斯过程的偏振拉曼光谱；通过对ＢａＴｉＯ３单晶斯托克斯和反斯托克斯拉曼光谱的综合分析，证实在Ｘ（ＺＺ）Ｙ几何配置下测量到的位于２７５和５１４ｃｍ－１处的强峰为一阶拉曼光谱。此结果支持了ＢａＴｉＯ３铁电相变机制的有序—无序模型。
|
| 关 键 词： | 反斯托克斯 BaTiO_3 铁电相变 |
Application of the Anti Stokes Raman Spectra on the Study of Ferroelectric Phase Transition in BaTiO 3 |
| |
| JIANG Yi jian,LI Li ming,ZENG Ling zhi.Application of the Anti Stokes Raman Spectra on the Study of Ferroelectric Phase Transition in BaTiO 3[J].Chinese Journal of Light Scattering,1999,11(2):77-80. |
| |
| Authors: | JIANG Yi jian LI Li ming ZENG Ling zhi |
| |
| Abstract: | The temperature dependence of the Raman scattering cross section of first and second order Stokes and anti Stokes Raman processes was discussed theoretically. Polarized Stokes and anti Stokes Raman spectra in a BaTiO 3 single crystal were measured over the temperature range between 293 K and 401 K. Based on the comprehensive analysis of both Stokes and anti Stokes Raman spectra, the strong bands at 275 and 514 cm -1 in the X(ZZ)Y geometry are confirmed to be of first order. The result supports the order disorder model of the ferroelectric phase transition. |
| |
| Keywords: | anti Stokes BaTiO 3 ferroelectric phase transition |
| 本文献已被 CNKI 维普 等数据库收录！ |
