中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 9 No. 1 March 1999 |
（1.Center for Fundamental Physics,University of Science and Technology of China, Hefei230026, P. R. China
2.Institute of Material Science,Guangxi University, Nanning530004, P. R. China
3.Tianjin Electronic Materials Research Institute, Tianjin 300192, P. R. China）
Abstract:The compound Er3Co6Sn5has been studied by means of X-ray powder diffraction technique and refined by Rietveld method. The compound Er3Co6Sn5has an orthorhombic Dy3Co6Sn5-type structure, space group Immm (No.71),Z=2 andDx=9.465g/cm3. At room temperature, the lattice constants area=4.296 6(4) ,b=12.289 7(9) ,c=9.627 1(6) . The Rietveld structural refinement was performed and led toRwp=0.196 andRp=0.153. The figure of meritFNfor the X-ray powder diffraction data isF30 =34.7 (0.009 0, 96). The present structural refinement supports that Er(1), Er(2), Co(1), Co(2), Sn (1) and Sn(2) atoms occupy the 2a, 4g, 4j, 8l, 2cand 8lpositions, respectively.
Key words: Er3Co6Sn5 X-ray powder diffraction Rietveld structural refinement
