Temperature-dependent Raman scattering of multiferroic Pb(Fe1/2Nb1/2)O-3

doi:10.1088/0953-8984/23/1/015401

IMR OpenIR

	Temperature-dependent Raman scattering of multiferroic Pb(Fe1/2Nb1/2)O-3
	Garcia-Flores, A. F.1,2; Tenne, D. A.2; Choi, Y. J.3; Ren, W. J.4,5; Xi, X. X.1; Cheong, S. W.3
通讯作者	Garcia-Flores, A. F.()
	2011-01-12
发表期刊	JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN	0953-8984
卷号	23 期号:1 页码:6
摘要	Raman scattering measurements on multiferroic Pb(Fe1/2Nb1/2)O-3 over a wide temperature range from 10 to 500 K were performed. Very broad and overlapping peaks (first-order character) and a prominent high-frequency peak at similar to 1130 cm(-1), which we assign as a two-phonon peak, were observed. These features showed remarkable changes in their Raman scattering intensity and spectral shape at the characteristic temperature T* similar to 330 K, clearly showing a structural lattice change at around T. The temperature dependence of some stretching vibration modes of the BO6 units revealed an anomalous frequency shift below T-N similar to 143 K. These anomalous deviations at T-N of the phonon frequency are associated with the spin-phonon coupling mechanism. Complementary magnetic data confirmed a weak magnetic ordering at room temperature and interestingly showed an anomaly at about T. These results suggest an interplay between ferroelectric, structural and magnetic degrees of freedom in PFN, starting to be significant at around T*.
资助者	DOE
DOI	10.1088/0953-8984/23/1/015401
收录类别	SCI
语种	英语
资助项目	DOE[DE-FG02-01ER45907]
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
WOS记录号	WOS:000285003400010
出版者	IOP PUBLISHING LTD
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/107250
专题	中国科学院金属研究所
通讯作者	Garcia-Flores, A. F.
作者单位	1.Penn State Univ, Dept Phys, University Pk, PA 16802 USA 2.Boise State Univ, Dept Phys, Boise, ID 83725 USA 3.Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 5.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Garcia-Flores, A. F.,Tenne, D. A.,Choi, Y. J.,et al. Temperature-dependent Raman scattering of multiferroic Pb(Fe1/2Nb1/2)O-3[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2011,23(1):6.
APA	Garcia-Flores, A. F.,Tenne, D. A.,Choi, Y. J.,Ren, W. J.,Xi, X. X.,&Cheong, S. W..(2011).Temperature-dependent Raman scattering of multiferroic Pb(Fe1/2Nb1/2)O-3.JOURNAL OF PHYSICS-CONDENSED MATTER,23(1),6.
MLA	Garcia-Flores, A. F.,et al."Temperature-dependent Raman scattering of multiferroic Pb(Fe1/2Nb1/2)O-3".JOURNAL OF PHYSICS-CONDENSED MATTER 23.1(2011):6.