| Abstrakt: |
The crystal structure of new ternary aluminides Ce2-x (Ag0.42Al0.58)17Agy with x = 0.39, y = 0.18(Dy2-x(Ag0.46Al0.54)17Agy (x = 0.25, y = 0.23)-type structure), a = 9.3742(2), c = 9.1525(3) Å, R = 0.059) and Ce(Ag0.58Al0.42)11 (BaCd11-type structure, a = 11.0466(3), c = 7.1101(5) Å, R = 0.066) have been determined using X-ray powder diffraction data and Rietveld least squares refinement. Isotypic compounds RE1.6(Ag, Al)17 (Dy2-x(Ag0.46 Al0.54)17Agy-type structure) with RE = La, Pr, Nd, and Sm and RE(Ag, Al)11 (BaCd11-type structure) with RE = La and Eu have been synthesized and their lattice constants have been determined. Copyright 1994, 1999 Academic Press |
