Effect of magnetic annealing on phonon behaviors of nanocrystalline BiFeO3

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	Effect of magnetic annealing on phonon behaviors of nanocrystalline BiFeO3
	Zhang, LY ; Yang, Y ; Ma, SY ; Luo, WJ ; Liu, YL ; Zhu, K
刊名	PHYSICA B-CONDENSED MATTER
	2012
卷号	407 期号:3 页码:494
关键词	RAMAN-SCATTERING TEMPERATURE CRYSTAL FILMS DIFFRACTION DOMAINS
ISSN号	0921-4526
通讯作者	Liu, YL: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	Influence of magnetic annealing at 823 K up to 101 (T) on the phonon behaviors of nanocrystalline BiFeO3 was investigated by Raman spectroscopy. The frequencies of fundamental Raman modes increase obviously with increasing annealing magnetic field, and the intensity of the 1260 cm(-1) two-phonon mode decreases. The pronounced anomalies of Raman phonon modes under magnetic annealing are attributed to the change of the spin-phonon coupling due to the modulation of spiral spin order. Furthermore, the temperature dependence of Raman peak positions, for the two prominent modes (147 and 176 cm(-1)), show no notable anomaly around T-N except the sample annealed under 10 T magnetic field; meanwhile, in this sample, another obvious phonon anomaly occurs at similar to 150 K (another magnetic phase transition point), which indicate that stronger magnetic annealing with 10 T intensely enhances the spin-phonon coupling, and possibly increases magnetoelectric coupling of nanocrystalline BiFeO3 due to severely modulation of spiral spin order. (C) 2011 Elsevier B.V. All rights reserved.
收录类别	SCI
资助信息	National Nature Science Foundation of China [10674171, 10874236]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36481]
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	Zhang, LY,Yang, Y,Ma, SY,et al. Effect of magnetic annealing on phonon behaviors of nanocrystalline BiFeO3[J]. PHYSICA B-CONDENSED MATTER,2012,407(3):494.
APA	Zhang, LY,Yang, Y,Ma, SY,Luo, WJ,Liu, YL,&Zhu, K.(2012).Effect of magnetic annealing on phonon behaviors of nanocrystalline BiFeO3.PHYSICA B-CONDENSED MATTER,407(3),494.
MLA	Zhang, LY,et al."Effect of magnetic annealing on phonon behaviors of nanocrystalline BiFeO3".PHYSICA B-CONDENSED MATTER 407.3(2012):494.