Abstract
A new ternary compound Al 14Dy 5Si was discovered and studied by means of X-ray powder diffraction technique. The ternary compound Al 14Dy 5Si has a hexagonal BaPb 3-type structure, space group R 3 m (No. 166), the lattice parameters a = 0.61482(1) nm, c = 2.09780(2) nm. The crystal structure of the compound Al 14Dy 5Si was successfully refined by using Rietveld method from X-ray diffraction data. The R-factors of Rietveld refinement are R p = 0.091 and R wp = 0.120, respectively. The thermal dependence of the magnetization ( M-T curves) for the compound was measured by a vibrating sample magnetometer. The experimentally determined magnetic effective paramagnetic moment is μ eff = 23.22 μ B per formula unit (10.36 μ B per Dy atom).
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