Raman scattering study of multiferroic BiFeO3 single crystal
Raman scattering study of multiferroic BiFeO3 single crystal
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DOI：
10.1016/j.jmmm.2006.10.282
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发表时间：
2007-03-01
影响因子：
2.7
通讯作者：
Miyayama, M.
中科院分区：
文献类型：
--
作者：
Fukumura, H.;Harima, H.;Miyayama, M.
在4-1200K温度范围内测量了块体BiFeO_3单晶的拉曼散射光谱，在4K观察到了群论预测的所有拉曼活跃声子模，并用偏振测量进行了指认。此外，我们还发现在600-700和1000-1100K的拉曼光谱发生了剧烈的变化，并结合磁性有序和结构相变进行了讨论。(C)2006爱思唯尔B.V.保留所有权利。
Raman scattering spectra of bulk BiFeO3 single crystals have been measured in the temperature range of 4-1200 K. All Raman active phonon modes predicted by the group theory were observed at 4 K and assigned by a polarized measurement. Moreover, we have found drastic changes of Raman spectra at 600-700 and 1000-1100 K. These changes were discussed in combination with magnetic ordering and structural phase transition. (c) 2006 Elsevier B.V. All rights reserved.