Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4

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	Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4; Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4
	H. F. Yang; G. H. Rao; W. G. Chu; G. Y. Liu; Z. W. Ouyang; J. K. Liang
	2002 ; 2002
发表期刊	Journal of Alloys and Compounds ; Journal of Alloys and Compounds
ISSN	0925-8388 ; 0925-8388
卷号	339 期号:1-2 页码:189-194
摘要	Phase relationships at ambient temperature in the pseudobinary system Pr5Si4-Pr5Ge4 were studied by X-ray powder diffraction (XRD). Three structurally distinct phase regions exist in this system. The Pr5Si4-based solid solution where Ge statistically substitutes for Si crystallizes in the Zr5Si4-type tetragonal structure with space group P4(1)2(1)2. The Pr5Ge4-based solid solution where Si statistically substitutes for Ge crystallizes in Sm5Ge4-type orthorhombic structure with space group Pnma. The crystal structure of a ternary intermediate phase, which exists between 1.65 less than or equal to x less than or equal to 2.6, is determined for the first time, and shown to be the Gd5Si2Ge2-type monoclinic structure with space group P112(1)/a. The Rietveld powder diffraction profile fitting technique was used for the refinement of crystal structure. The lattice parameters, atomic occupations, interatomic distances of the Pr5Si4, Pr5Ge4 and Pr5Si2Ge2 compounds were derived. (C) 2002 Elsevier Science B.V. All rights reserved.; Phase relationships at ambient temperature in the pseudobinary system Pr5Si4-Pr5Ge4 were studied by X-ray powder diffraction (XRD). Three structurally distinct phase regions exist in this system. The Pr5Si4-based solid solution where Ge statistically substitutes for Si crystallizes in the Zr5Si4-type tetragonal structure with space group P4(1)2(1)2. The Pr5Ge4-based solid solution where Si statistically substitutes for Ge crystallizes in Sm5Ge4-type orthorhombic structure with space group Pnma. The crystal structure of a ternary intermediate phase, which exists between 1.65 less than or equal to x less than or equal to 2.6, is determined for the first time, and shown to be the Gd5Si2Ge2-type monoclinic structure with space group P112(1)/a. The Rietveld powder diffraction profile fitting technique was used for the refinement of crystal structure. The lattice parameters, atomic occupations, interatomic distances of the Pr5Si4, Pr5Ge4 and Pr5Si2Ge2 compounds were derived. (C) 2002 Elsevier Science B.V. 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. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;yang, hf (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china ; chinese acad sci, inst phys, beijing 100080, peoples r china. chinese acad sci, ctr condensed matter phys, beijing 100080, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;yang, hf (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china
关键词	Rare Earth Compounds Rare Earth Compounds Crystal Structure Crystal Structure X-ray Diffraction X-ray Diffraction Gd-5(Si2ge2) Gd-5(Si2ge2) Transition Transition Gd-5(Sixge1-x)(4) Gd-5(Sixge1-x)(4)
URL	查看原文 ; 查看原文
WOS记录号	WOS:000176054000026 ; WOS:000176054000026
引用统计	被引频次：30[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/321006/36485
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. F. Yang,G. H. Rao,W. G. Chu,et al. Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4, Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4[J]. Journal of Alloys and Compounds, Journal of Alloys and Compounds,2002, 2002,339, 339(1-2):189-194, 189-194.
APA	H. F. Yang,G. H. Rao,W. G. Chu,G. Y. Liu,Z. W. Ouyang,&J. K. Liang.(2002).Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4.Journal of Alloys and Compounds,339(1-2),189-194.
MLA	H. F. Yang,et al."Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4".Journal of Alloys and Compounds 339.1-2(2002):189-194.