Structures of the zeta and zeta ' phases in the Ag-Ga system

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	Structures of the zeta and zeta ' phases in the Ag-Ga system
	Y. Zhang ; Q. L. Liu ; J. B. Li ; J. K. Liang ; J. Luo ; F. S. Liu ; Y. G. Xiao ; G. H. Rao
刊名	Journal of Alloys and Compounds
	2005
卷号	399 期号:1-2 页码:155-159
关键词	zeta-phase zeta '-phase structure determination X-ray powder diffraction silver-gallium equilibrium diagram alloys diffraction refinement region
ISSN号	0925-8388
中文摘要	The crystal structures of the zeta-phase and zeta'-phase have been determined by X-ray powder diffraction and refined by Rietveld method. The space group of the zeta'-phase is P (6) over bar 2m with the lattice parameters a = 7.7710(1) and c = 2.8788(1) angstrom. The ideal formula is Ag2Ga (real composition Ag2+xGa1-x, x = 0.16) and the chemical formula per unit cell is Z = 3. Six Ag atoms occupy the 3g positions with x = 0.63970(8) and the 3f positions with x = 0.30347(9), respectively. Three Ga atoms occupy the 2c and the 1b sites. The zeta-phase is obtained by quenching the sample containing 20 at.% Ga from 500 degrees C to room temperature. Its space group is close-packed hexagonal, P6(3)/mmc, and the lattice parameters are a = 2.8818(1) and c = 4.6956(1) angstrom. There are 2 atoms (1.5Ag + 0.5Ga) per unit cell, which occupy the 2c site statistically. The relation between the structures of the zeta- and zeta'-phase is discussed. (c) 2005 Elsevier B.V. All rights reserved.
原文出处	://WOS:000230614600028
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/35239]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Zhang,Q. L. Liu,J. B. Li,et al. Structures of the zeta and zeta ' phases in the Ag-Ga system[J]. Journal of Alloys and Compounds,2005,399(1-2):155-159.
APA	Y. Zhang.,Q. L. Liu.,J. B. Li.,J. K. Liang.,J. Luo.,...&G. H. Rao.(2005).Structures of the zeta and zeta ' phases in the Ag-Ga system.Journal of Alloys and Compounds,399(1-2),155-159.
MLA	Y. Zhang,et al."Structures of the zeta and zeta ' phases in the Ag-Ga system".Journal of Alloys and Compounds 399.1-2(2005):155-159.