| 掺杂铌酸锶钡单晶的喇曼散射 |
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| 引用本文： | 李丽霞,朱乃钰,陈晨,陈焕矗,宋永远.掺杂铌酸锶钡单晶的喇曼散射[J].山东大学学报(理学版),1991(1). |
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| 作者姓名： | 李丽霞 朱乃钰 陈晨 陈焕矗 宋永远 |
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| 作者单位： | 山东大学实验中心，山东大学实验中心，山东大学物理系，山东大学晶体所，山东大学晶体所 |
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| 基金项目： | 本校晶体材料国家重点实验室资助 |
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| 摘 要： | 本文测定了不同掺杂(Cd)浓度的Sr_(0.61) Ba_(0.39) Nb_2O_6单晶在不同几何配置、不同温度下的偏振喇曼光谱.实验证明,随着温度的升高和掺杂浓度的增加,总的趋势是光谱加宽,谱峰红移,峰强度减小,但基本峰形不变.说明铌酸锶钡单晶的喇曼散射中NbO_6氧八面体内模起重要作用.
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| 关 键 词： | 喇曼光谱 铁电相变 掺杂铌酸锶钡单晶 |
THE INFLUENCE OF DOPING AND TEMPERATURE VARIATIONS ON RAMAN SPECTRA OF Sr_(0.61) Ba_(0.39) NbO_3 |
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| Li Lixia, Zhu Naiyu, Exp. Center,Shandong Univ.,JinanChen Chen Dept. of Phys.Chen Huanchu, Song Yongyuan Inst. of Crys.Mat..THE INFLUENCE OF DOPING AND TEMPERATURE VARIATIONS ON RAMAN SPECTRA OF Sr_(0.61) Ba_(0.39) NbO_3[J].Journal of Shandong University,1991(1). |
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| Authors: | Li Lixia Zhu Naiyu Exp Center Shandong Univ JinanChen Chen Dept of PhysChen Huanchu Song Yongyuan Inst of CrysMat |
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| Abstract: | This paper reports the polarized Raman spectra of Sr_(0.51) Ba_(0.39) Nb_2O_6 with different Cd doping contents at different temperature. With the increasing of temperature and doping contents, the width of the bands broadened while the intensities of peaks decreased. But no obvious changes of spectra fundamental shapes take place. It is shown that the internal modes of NbO_6 octahedra in SBN give the major contribution to Raman scattering. |
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| Keywords: | Raman spectra ferroelectric transition dope SBN single crystal |
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