Temperature dependence of phonon spectra and structural characteristics in multiferroic LuFe(2)O(4) system

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	Temperature dependence of phonon spectra and structural characteristics in multiferroic LuFe(2)O(4) system
	Y. Hou; Y. P. Yao; S. N. Dong; M. L. Teng; X. F. Sun; X. G. Li
	2011
发表期刊	Journal of Raman Spectroscopy
ISSN	0377-0486
卷号	42 期号:8 页码:1695-1700
摘要	The phonon spectra and structural characteristics of the LuFe(2)O(4) system were investigated using X-ray diffraction as well as Raman and infrared (IR) spectroscopic techniques. Two step-like anomalies of the wavenumbers of the E(g)(3) peak in the Raman spectra and the E(u)(3) peak in IR spectra, as well as some weak anomalies of the lattice parameters, were found around the ferrimagnetic and ferroelectric transition temperatures. The substitutions of Lu with Yb and Fe with Mn lead to the corresponding wavenumber shifts in the optical spectra, which can be attributed to the changes in the atomic mass and lattice parameters. Furthermore, the Raman intensity was found to be related to the changes in the local structure and electrical conductivity. These results illustrate that the structural fluctuations could effectively influence the phonon modes, and a possible interplay among the structural, magnetic, and charge-ordering properties exists in this multiferroic system. Copyright (C) 2011 John Wiley & Sons, Ltd.
部门归属	[hou, y.; yao, y. p.; dong, s. n.; teng, m. l.; sun, x. f.; li, x. g.] univ sci & technol china, dept phys, hefei natl lab phys sci microscale, hefei 230026, peoples r china. [hou, y.; yao, y. p.; dong, s. n.; teng, m. l.; sun, x. f.; li, x. g.] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;li, xg (reprint author), univ sci & technol china, dept phys, hefei natl lab phys sci microscale, hefei 230026, peoples r china;lixg@ustc.edu.cn
关键词	Phonon Spectra Structure Multiferroic Charge Ferroelectricity
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30388
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Hou,Y. P. Yao,S. N. Dong,et al. Temperature dependence of phonon spectra and structural characteristics in multiferroic LuFe(2)O(4) system[J]. Journal of Raman Spectroscopy,2011,42(8):1695-1700.
APA	Y. Hou,Y. P. Yao,S. N. Dong,M. L. Teng,X. F. Sun,&X. G. Li.(2011).Temperature dependence of phonon spectra and structural characteristics in multiferroic LuFe(2)O(4) system.Journal of Raman Spectroscopy,42(8),1695-1700.
MLA	Y. Hou,et al."Temperature dependence of phonon spectra and structural characteristics in multiferroic LuFe(2)O(4) system".Journal of Raman Spectroscopy 42.8(2011):1695-1700.