New ternary compound LasAl13Sn3

稀有金属（英文版）, 2009, 28(5): 491-493. doi: 10.1007/s12598-009-0095-2

^1, , ^2, , ^3, , ^4, , ^5,

1.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

2.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

3.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

4.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China;Department of Physics and Electronic Information Science, Guangxi Teachers Education University, Nanning 530023, China

5.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

基金项目: 广西自然科学基金(0832027;0640072)

New ternary compound LasAl13Sn3

HE Wei ^1, , XIA Xiuwen ^2, , ZHANG Jiliang ^3, , HUANG Jinli ^4, , LIU Yixin ^5,

1.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

2.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

3.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

5.Key Laboratory of Nonferrous Metal Materials and New Processing Technology (Ministry of Education), College of Materials Science and Engineering, Guangxi Uni-versity, Nanning 530004, China

Keywords： crystallography

A new ternary compound LasAl13Sn3 was synthesized and studied by means of X-ray powder diffraction technique. The compound La8Al13Sn3 crystallizes in a hexagonal AlB2-type structure with space group P6/mmm (No. 191) and the lattice parameters a = 0.44919(1) nm and c = 0.43835(1)nm. The Smith and Snyder figure of merit for index, FN, is F30 = 197.3(30). The Rietveld refinement for the crystal struc-ture of the compound was carried out successfully. The liability R-factors of Rietveld refinement are Rp = 0.114 and Rwp = 0.148. The com-pound La8Al<13>Sn3 decomposes into LaAl2 with cubic Structure and space group Fd3m (227), LaAl3 with hexagonal structure and space group P63/mmc (194), and Sn at 720℃.

参考文献

[1]	Villars P.Pearson's Handbook,Crystallographic Data for IntermetaUic Phases[M].ASM International,Materials Park,Ohio
[2]	Rietveld H M .Line profiles of neutron powder-diffraction peaks for structure refinement[J].Acta Crystallographica,1967,22:151.
[3]	Rietveld H M .Profile refinement method for nuclear and magnetic structures[J].Journal of Applied Crystallography,1969,2:65.
[4]	Jade5.0,XRD Pattern Processing Materials[M].Livermore:Data Inc,1999
[5]	Smith G S;Snyder P L .FN:a criterion for rating powder diffraction patterns and evaluating the reliability of powder-pattern indexing[J].Journal of Applied Crystallography,1979,12:60.
[6]	Young A R;Larson A C;PaivaSantos C O.User's Guide to Program DBWS9411 for Rietveld Analysis of X-ray and Neutron Powder Diffraction Patterns[M].Georgia Institute of Technology,Atlanta,1995
[7]	Marciniak H;Diduszko R.DMPLOT-PIot View Program for Rietveld Refinement Method[M].Warsaw,1997
[8]	Powder Diffraction Files.International Centre for Diffraction Data,12 Campus Boulevard[J].Newtown Square,2002
[9]	Kraus W;Nolze G.PowderCell for Windows[M].Federal Institute for Materials Research and Testing,Berlin,2000

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

New ternary compound LasAl13Sn3

参考文献