Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1621865 | Journal of Alloys and Compounds | 2009 | 5 Pages |
Abstract
Phase equilibria in the Ce-Au-Sb system were derived from X-ray diffraction data and, optionally, from scanning electron microscope analysis of annealed at 870 K alloys. The structures of compounds were investigated using X-ray single crystal and powder diffraction methods. Five ternary compounds were found to exist within the investigated concentration region (0-50 at.% Ce). New U3Cu2Sb3-type Ce3Au2Sb3 compound (a = 4.5966(4) Ã
, c = 24.005(2) Ã
, space group P63/mmc, no. 194) was discovered and studied by X-ray single crystal diffraction. The existence and crystal structures of following compounds were confirmed at 870 K: the ZrCuSi2-type CeAu1âxSb2, UHg2-type Ce(Au1âxSbx)2 and Y3Au3Sb4-type Ce3Au3Sb4. For the reported earlier UHg2-type Ce(Au1âxSbx)2 and ZrCuSi2-type CeAu1âxSb2 compounds the homogeneity regions were established from annealed at 870 K alloys: 0.19 â¤Â x â¤Â 0.28 and 0 â¤Â x â¤Â 0.21 respectively. At 870 K, the structure of CeAuSb compound was found to be related to the CaIn2-type from X-ray powder diffraction data. Moreover, the single crystal X-ray diffraction studies of the as-cast CeAu1âxSb2 for x = 0.118(2) and x = 0.162(4) are given in present paper as well.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
L.P. Salamakha, E. Bauer, S.I. Mudryi, A.P. Gonçalves, M. Almeida, H. Noël,