Transformation of CeO2(111) to Ce2O3(0001) films

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	Transformation of CeO2(111) to Ce2O3(0001) films
	Xiao, WD ; Guo, QL ; Wang, EG
刊名	CHEMICAL PHYSICS LETTERS
	2003
卷号	368 期号:5-6 页码:527
关键词	TEMPERATURE EPITAXIAL-GROWTH PULSED-LASER DEPOSITION CERIUM OXIDE-FILMS THIN-FILMS ELECTRONIC-STRUCTURE SINGLE-CRYSTAL CEO2 FILMS SURFACES SI(111) SILICON
ISSN号	0009-2614
通讯作者	Guo, QL (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Surface Phys, Beijing 100080, Peoples R China.
中文摘要	La4Ba2.6Ca1.4(Mn4Ca)O-19, a novel hexagonal perovskite-intergrowth manganate, was synthesized by solid-state reaction. It crystallizes in the space group C2/m (no. 12) with the lattice parameters of a = 9.8394(4) Angstrom, b = 5.6823(2) Angstrom, c = 15.6435(3) Angstrom, and beta = 102.093(5), cell volume of 855.21(5) Angstrom(3), and Z = 2. The structure was investigated by electron, X-ray, and neutron diffraction techniques and fully resolved by refinements of both X-ray and neutron powder diffraction data. The structure can be described as alternate stacking of 6H-type hexagonal perovskite blocks and graphite-like Ca2O sheets. In the hexagonal perovskite block, Mn and Ca cations occupy the octahedral sites of the corner-shearing and face-shearing octahedra, respectively. Preferred La/Ba and Ca/La substitution at the ratio of 7:3 was observed over specific crystallographic sites. La(4)Ba(2.6)Cal(1.4)(Mn4Ca)O-19 is an n = 5 member of the A(n+1)Mn(n)O(3n+3)(Ca2O) series in which 1/5 of the Mn atoms in the 6H-hexagonal perovskite blocks are replaced by Ca. A structural principle that is based on alternate stacking of close-packed [AO(3)] layers and graphite-like sheets is introduced for structural prediction of new hexagonal perovskite intergrowth compounds.
收录类别	SCI
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/46008]
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	Xiao, WD,Guo, QL,Wang, EG. Transformation of CeO2(111) to Ce2O3(0001) films[J]. CHEMICAL PHYSICS LETTERS,2003,368(5-6):527.
APA	Xiao, WD,Guo, QL,&Wang, EG.(2003).Transformation of CeO2(111) to Ce2O3(0001) films.CHEMICAL PHYSICS LETTERS,368(5-6),527.
MLA	Xiao, WD,et al."Transformation of CeO2(111) to Ce2O3(0001) films".CHEMICAL PHYSICS LETTERS 368.5-6(2003):527.