Neutron and x-ray scattering study of phonon dispersion and diffuse scattering in (Na,Bi)TiO3-xBaTiO(3) single crystals near the morphotropic phase boundary

doi:10.1103/PhysRevB.96.174108

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	Neutron and x-ray scattering study of phonon dispersion and diffuse scattering in (Na,Bi)TiO3-xBaTiO(3) single crystals near the morphotropic phase boundary
	Luo, Chengtao ; Bansal, Dipanshu 1; Li, Jiefang ; Viehland, Dwight ; Winn, Barry 2; Ren, Yang 3; Li, Xiaobing 4; Luo, Haosu 4; Delaire, Olivier 1,5
	2017
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
卷号	96 期号:17
摘要	Neutron and x-ray scattering measurements were performed on (Na1/2Bi1/2)TiO3-x at%BaTiO3 (NBT-xBT) single crystals (x = 4, 5, 6.5, and 7.5) across the morphotropic phase boundary (MPB), as a function of both composition and temperature, and probing both structural and dynamical aspects. In addition to the known diffuse scattering pattern near the Gamma points, our measurements revealed new, faint superlattice peaks, as well as an extensive diffuse scattering network, revealing a short-range ordering of polar nanoregions (PNR) with a static stacking morphology. In samples with compositions closest to the MPB, our inelastic neutron scattering investigations of the phonon dynamics showed two unusual features in the acoustic phonon branches, between the superlattice points, and between the superlattice points and Gamma points, respectively. These critical elements are not present in the other compositions away from the MPB, which suggests that these features may be related to the tilt modes coupling behavior near the MPB.
DOI	10.1103/PhysRevB.96.174108
WOS记录号	WOS:000414845800002
EI入藏号	2469-9969
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.sic.ac.cn/handle/331005/26630
专题	中国科学院上海硅酸盐研究所
作者单位	1.Virginia Tech, Mat Sci & Engn, Blacksburg, VA 24061 USA 2.Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA 3.Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA 4.Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA 5.Chinese Acad Sci, Shanghai Inst Ceram, 215 Chengbei Rd, Shanghai 201800, Peoples R China 6.Duke Univ, Mech Engn & Mat Sci Dept, Durham, NC 27708 USA
推荐引用方式 GB/T 7714	Luo, Chengtao,Bansal, Dipanshu,Li, Jiefang,et al. Neutron and x-ray scattering study of phonon dispersion and diffuse scattering in (Na,Bi)TiO3-xBaTiO(3) single crystals near the morphotropic phase boundary[J]. PHYSICAL REVIEW B,2017,96(17).
APA	Luo, Chengtao.,Bansal, Dipanshu.,Li, Jiefang.,Viehland, Dwight.,Winn, Barry.,...&Delaire, Olivier.(2017).Neutron and x-ray scattering study of phonon dispersion and diffuse scattering in (Na,Bi)TiO3-xBaTiO(3) single crystals near the morphotropic phase boundary.PHYSICAL REVIEW B,96(17).
MLA	Luo, Chengtao,et al."Neutron and x-ray scattering study of phonon dispersion and diffuse scattering in (Na,Bi)TiO3-xBaTiO(3) single crystals near the morphotropic phase boundary".PHYSICAL REVIEW B 96.17(2017).