New iron-based rare-earth CeFe13-xSix (2.4 less than or equal to x less than or equal to 2.6) intermetallic compounds which crystallized in the NaZn13-type structure with Fm3c(O-h(6)) space-group symmetry have been found. The ac susceptibility and the magnetization curve measurements are reported. The substitution of silicon for iron leads to an increase of the Curie temperature and a reduction of the unit-cell volume. The saturation magnetic moment decreases from 15.7 mu(beta)/f.u. to 13.4 mu(beta)/f.u. with x=2.4-2.6. (C) 1995 American Institute of Physics.
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