Raman tensor elements for multiferroic BiFeO3 with rhombohedral R3c symmetry
Raman tensor elements for multiferroic BiFeO3 with rhombohedral R3c symmetry
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DOI：
10.1002/jrs.2394
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发表时间：
2010-01-01
影响因子：
2.5
通讯作者：
Pezzotti, Giuseppe
中科院分区：
文献类型：
--
作者：
Porporati, Alessandro Alan;Tsuji, Keisuke;Pezzotti, Giuseppe
利用极化拉曼微探针对多铁性BiFeO3粗粒多晶发射的拉曼光谱进行了定量评价。拉曼声子模式强度的依赖关系首先在理论上被建模为晶体旋转的函数。然后，通过对A(g)和E-g振动模的分析，实验确定了拉曼张量元。版权所有John Wiley & Sons， Ltd. 2009
A quantitative assessment of the Raman spectrum emitted from a coarse-grained polycrystal of multiferroic BiFeO3 has been carried out by means of a polarized Raman microprobe. The dependence of the intensity of Raman phonon modes has been first theoretically modeled as a function of crystal rotation. Then, the Raman tensor elements have been experimentally determined from the analysis of the A(g) and E-g vibrational modes. Copyright (C) 2009 John Wiley & Sons, Ltd.