Local structure modulation of the low La-doped layered strontium manganite Sr4Mn3O10 studied by transmission electron microscopy and electron energy-loss spectroscopy

doi:10.1007/s10853-007-1895-0

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	Local structure modulation of the low La-doped layered strontium manganite Sr4Mn3O10 studied by transmission electron microscopy and electron energy-loss spectroscopy
	Yang, H.2,3; Tang, Y.K.1; Jiang, J.L.3; Feng, W.J.3; Wei, Z.Q.3; Yao, L.D.2; Zhang, W.2; Li, Q.A.1; Li, F.Y.2; Jin, C.Q.2
	2007-12-01
关键词	Doping (additives) Electron diffraction High resolution electron microscopy Lattice constants Manganites Microstructure Lattice distortion Oxygen deficiency Superstructure modulation
卷号	42
期号	23
DOI	10.1007/s10853-007-1895-0
页码	9559-9564
英文摘要	Transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS) have been used to characterize the structure and microstructure of the low La-doped layered manganite La x Sr 4-x Mn3O10 (x &le 0.15). The structure of the perfect phase has been identified as an n = 3 layered structure of the hexagonal series by electron diffraction (ED), high-resolution electron microscopy (HRTEM) together with numerical image simulations. The presence of local superstructure modulation associated with La ordering in the compounds was revealed by electron diffraction and high-resolution electron microscopy. Electron diffraction data indicate that this superstructure modulation is two-dimensional, and the modulation plane lies in the ac plane. The two primary modulation vectors are q1 = (1/4)a* and q2 = (1/2)c*. In addition, another type of modulated structure associated with periodic lattice distortion was occasionally visible in the La 0.15Sr3.85Mn3O10 phase. Energy-loss spectroscopy data indicate that the periodic lattice distortion is led by ordered oxygen deficiency. © 2007 Springer Science+Business Media, LLC.
会议录	Journal of Materials Science
会议录出版者	Kluwer Academic Publishers, Van Godewijckstraat 30, Dordrecht, 3311 GZ, Netherlands
语种	英语
ISSN号	00222461
WOS研究方向	Materials Science
WOS记录号	WOS:000249657500010
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117116]
专题	理学院
作者单位	1.State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100080, China 2.Laboratory for Extreme Condition Physics, Institute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100080, China; 3.School of Science, Lanzhou University of Technology, Gansu Lanzhou 730050, China;
推荐引用方式 GB/T 7714	Yang, H.,Tang, Y.K.,Jiang, J.L.,et al. Local structure modulation of the low La-doped layered strontium manganite Sr4Mn3O10 studied by transmission electron microscopy and electron energy-loss spectroscopy[C]. 见:.