Structural properties of Bi1-xLaxFeO3 studied by micro-Raman scattering

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	Structural properties of Bi1-xLaxFeO3 studied by micro-Raman scattering
	Yang, Y ; Liu, YL ; Zhu, K ; Zhang, LY ; Ma, SY ; Liu, JE ; Jiang, YJ
刊名	CHINESE PHYSICS B
	2010
卷号	19 期号:3
关键词	THIN-FILMS BIFEO3
ISSN号	1674-1056
通讯作者	Liu, YL (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	This paper reports that La-doped BiFeO3 (Bi1-xLaxFeO3, x = 0, 0.1, 0.2, 0.3, 0.6, 0.8 and 1.0) were studied by using micro-Raman spectroscopy and x-ray diffraction (XRD). The XRD patterns indicate that the structure of Bi1-xLaxFeO3 changes from rhombohedral BiFeO3 to orthorhombic LaFeO3. The results of Raman spectroscopy show good agreement with the XRD results. Strikingly, the phonon peak at around 610 cm(-1) and the two-phonon peaks in the high frequency range exist in all compounds and enhance with increasing La substitution. The increasing intensity of the 610 cm(-1) peak is attributed to the changes in the FeO6 octahedron during the rhombohedral-orthorhombic phase transition. The enhancements of the two-phonon peaks are associated with the breakdown of the cycloid spin configuration with the appearance of the orthorhombic structure. These results indicate the existence of strong spin phonon coupling in Bi1-xLaxFeO3, which may provide useful information for understanding the effects of La content on the structural and magnetic properties of Bi1-xLaxFeO3.
收录类别	SCI
资助信息	National Natural Science Foundation of China [10674171, 10874236]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/53339]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Yang, Y,Liu, YL,Zhu, K,et al. Structural properties of Bi1-xLaxFeO3 studied by micro-Raman scattering[J]. CHINESE PHYSICS B,2010,19(3).
APA	Yang, Y.,Liu, YL.,Zhu, K.,Zhang, LY.,Ma, SY.,...&Jiang, YJ.(2010).Structural properties of Bi1-xLaxFeO3 studied by micro-Raman scattering.CHINESE PHYSICS B,19(3).
MLA	Yang, Y,et al."Structural properties of Bi1-xLaxFeO3 studied by micro-Raman scattering".CHINESE PHYSICS B 19.3(2010).