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Formation and magnetostructural characterization of the novel ternary compound Ce3Fe29-xMox

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4 Author(s)
J. L. Sanchez ; Lab. de Magnetismo, Univ. de La Habana, Cuba ; H. Salim de Amorim ; M. R. Amaral ; P. H. Domingues

Formation and magnetostructural properties of the novel ternary ferromagnetic compound Ce3Fe29-xMox is reported. It was obtained in alloys with nominal compositions Ce3 Fe29-xMox, x=1.4, 1.5, and 1.6, prepared by arc melting and annealing during three weeks at 950°C. The crystal structure was well resolved as monoclinic with space group A2/m (No 12). Quantitative phase analysis, based on the processing of the X-ray diffraction patterns by the Rietveld method, was performed. Ce3 Fe29-xMox is the main phase (78-72 wt.%) with lattice parameters a=10.553(1) Å, b=8.511(1) Å, c=9.688(1) Å, and β=96.78(1)°. It coexists with Ce(Fe,Mo) 12 as main spurious phase. Atomic positions and mean Fe-Fe interatomic distances are reported. Temperature-dependent magnetic susceptibility shows well-defined transitions at 7 and 115°C, which correspond to the 3:29 and 1:12 phases, respectively. Saturation magnetization at 4.2 K is 123 emu/g

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IEEE Transactions on Magnetics  (Volume:35 ,  Issue: 4 )