Subsolidus phase relations and crystal structure of compounds in the PrOx-CaO-CuO system

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	Subsolidus phase relations and crystal structure of compounds in the PrOx-CaO-CuO system
	G. B. Song; C. Q. Han; X. L. Chen; J. K. Liang; Q. L. Liu; Y. Q. Zhou; F. S. Liu; G. H. Rao
	2004
发表期刊	Journal of Solid State Chemistry
ISSN	0022-4596
卷号	177 期号:7 页码:2394-2403
摘要	The subsolidus phase relations of the PrOx-CaO-CuO pseudo-ternary system sintered at 950-1000degreesC have been investigated by X-ray powder diffraction. In this system, there exist one compound Ca10Pr4Cu24O41, one Ca2Pr2Cu5O10-bascd solid solution, seven three-phase regions and two two-phase regions. The crystal structures of Ca10Pr4Cu24O41, and Ca2Pr2Cu5O10-based solid solution have been determined. Compound Ca10Pr4Cu24O41 crystallizes in an orthorhombic cell with space group D-2h(20) - Cccm, Z = 4. Its lattice parameters are a = 11.278(2) Angstrom, b = 12.448(3) Angstrom and c = 27.486(8) Angstrom. The crystal structure of Ca2Pr2Cu5O10-based solid solution is an incommensurate phase based on the orthorhombic NaCuO2 type subcell. The lattice parameters of the subcell of the Ca2.4Pr1.6Cu5O10 are a(0) = 2.8246(7) Angstrom, b(0) = 6.3693(5) Angstrom, c(0) = 10.679(1) Angstrom, and those of the orthorhombic superstructure are with a = 5a(0), b = b(0), c = 5c(0). The Ca2.4Pr1.6Cu5O10 structure can also be determined by using a monoclinic supercell with space group C-2h(5) - P2(1)/c, Z = 4, a = 5a(0), b = b(0), c = c(0)/sin beta and beta = 104.79(1)degrees or 136.60(1)degrees, V = 5a(0)b(0)c(0). (C) 2004 Elsevier Inc. All rights reserved.
部门归属	chinese acad sci, inst phys, beijing 100080, peoples r china. chinese acad sci, ctr condensed matter phys, beijing 100080, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. sw univ sci & technol, sch mat sci & engn, mianyang 621002, peoples r china.;song, gb (reprint author), chinese acad sci, inst phys, box 603, beijing 100080, peoples r china;gbsong@aphy.iphy.ac.cn jkliang@aphy.iphy.ac.cn
关键词	Phase Relations Crystal Structure Pr-ca-cu-o System Ca10pr4cu24o41 Ca2pr2cu5o10 Solid Solution High-pressure Synthesis Neutron-diffraction o System Superconductivity Nacuo2 Diagram Nd Gd
URL	查看原文
WOS记录号	WOS:000222314700024
引用统计	被引频次：1[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/321006/35548
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. B. Song,C. Q. Han,X. L. Chen,et al. Subsolidus phase relations and crystal structure of compounds in the PrOx-CaO-CuO system[J]. Journal of Solid State Chemistry,2004,177(7):2394-2403.
APA	G. B. Song.,C. Q. Han.,X. L. Chen.,J. K. Liang.,Q. L. Liu.,...&G. H. Rao.(2004).Subsolidus phase relations and crystal structure of compounds in the PrOx-CaO-CuO system.Journal of Solid State Chemistry,177(7),2394-2403.
MLA	G. B. Song,et al."Subsolidus phase relations and crystal structure of compounds in the PrOx-CaO-CuO system".Journal of Solid State Chemistry 177.7(2004):2394-2403.