Phase relations of BaCoO3 (- delta)-BaInO2.5 and size variation effect of B-site cations on the phase transitions

doi:10.1016/j.ssi.2010.12.007

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	Phase relations of BaCoO3 (- delta)-BaInO2.5 and size variation effect of B-site cations on the phase transitions
	Li, Kuo 1; Wang, Yingxia 1; Lin, Jianhua 1; Li, Zhaofei 1,2
刊名	SOLID STATE IONICS
	2011-02-11
卷号	183 期号:1 页码:7-15
关键词	Perovskite Ba2in2o5 Brownmillerite Size Variance Phase Transition Conductivity
ISSN号	0167-2738
DOI	10.1016/j.ssi.2010.12.007
英文摘要	The phase relations in the system of BaCoO3 (-) (delta)-BaInO2.5 in the temperature range 800-1150 degrees C were investigated and five phases with perovskite or its related structures were identified. In the range of 1050 to 1150 degrees C, there exists a wide solid solution BaInxCo1 - xOy(0.1 <= x <= 0.84, 2.54 <= y <= 2.59) with the cubic perovskite structure. At 1050 degrees C, the cubic phase transforms to an orthorhombic phase firstly at x = 0.55 and the cubic solid solution is separated into two regions, and narrowed with the decrease of the temperature. The structure of the cubic phase in In-rich region appears as a super-lattice (a') of the simple cubic phase (a(p)) with the modulation vector a'=2a(p). At 950 degrees C. a tetragonal phase BaIn0.64Co0.36Oy emerges and extends to a solid solution at lower temperature. The orthorhombic and tetragonal structures are studied by electron diffraction and powder X-ray Rietveld analysis. The size variance of B-site cations was applied to interpret the phase transition from the cubic to the orthorhombic at x = 0.55 for compounds BaInxCo1 - xOy. The cubic solid solution shows good conductivities at low temperature. (C) 2010 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000288620500002
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/71651]
专题	中国科学院化学研究所
通讯作者	Wang, Yingxia
作者单位	1.Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.Kyoto Univ, Inst Integrated Cell Mat Sci, Kyoto 6068501, Japan
推荐引用方式 GB/T 7714	Li, Kuo,Wang, Yingxia,Lin, Jianhua,et al. Phase relations of BaCoO3 (- delta)-BaInO2.5 and size variation effect of B-site cations on the phase transitions[J]. SOLID STATE IONICS,2011,183(1):7-15.
APA	Li, Kuo,Wang, Yingxia,Lin, Jianhua,&Li, Zhaofei.(2011).Phase relations of BaCoO3 (- delta)-BaInO2.5 and size variation effect of B-site cations on the phase transitions.SOLID STATE IONICS,183(1),7-15.
MLA	Li, Kuo,et al."Phase relations of BaCoO3 (- delta)-BaInO2.5 and size variation effect of B-site cations on the phase transitions".SOLID STATE IONICS 183.1(2011):7-15.