Rietveld Refinement of New Ternary Compound Al14Dy5Si
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：He Wei Zeng Lingmin Zhang Jiliang
Key words：Al14Dy5Si; crystal structure; Rietveld method; rare earths;
Abstract: A new ternary compound Al14Dy5Si was discovered and studied by means of X-ray powder diffraction technique. The ternary compound Al14Dy5Si has a hexagonal BaPb3-type structure, space group R3m(No.166), the lattice parameters a=0.61482(1) nm, c=2.09780(2) nm. The crystal structure of the compound Al14Dy5Si was successfully refined by using Rietveld method from X-ray diffraction data. The R-factors of Rietveld refinement are Rp=0.091 and Rwp=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 μeff=23.22 μB per formula unit (10.36 μB per Dy atom).
He Wei1，Zeng Lingmin1，Zhang Jiliang1
(1.Key Laboratory of Nonferrous Metals and New Processing Technology of Materials, Ministry of Education, Guangxi University, Nanning 530004, China)
Abstract:A new ternary compound Al14Dy5Si was discovered and studied by means of X-ray powder diffraction technique. The ternary compound Al14Dy5Si has a hexagonal BaPb3-type structure, space group R3m(No.166), the lattice parameters a=0.61482(1) nm, c=2.09780(2) nm. The crystal structure of the compound Al14Dy5Si was successfully refined by using Rietveld method from X-ray diffraction data. The R-factors of Rietveld refinement are Rp=0.091 and Rwp=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 μeff=23.22 μB per formula unit (10.36 μB per Dy atom).
Key words:Al14Dy5Si; crystal structure; Rietveld method; rare earths;
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