Crystal structure and magnetic properties of Gd3Fe28Re

The structure and magnetic properties of a ternary intermetallic compound G d3Fe28Re stabilized by Re in the sixth period has been investigated by mean s of XRD analysis and magnetic measurement. The compound crystallizes in th e monoclinic Nd-3(Fe,Ti)(29)-type structure with space group A2/m. The latt ice parameters are a = 10.5778(1) Angstrom, b = 8.5317(1) Angstrom, c = 9.6 945(2) Angstrom, and beta = 96.85(1)degrees. The preferential occupancy of Re over the 4g, 4i(3) and 4i(4) crystallographic sites were determined succ essfully by Rietveld refinement of XRD data, which is basically attributed to the effect of size. The compound exhibits planar magnetocrystalline anis otropy perpendicular to the [204] direction. The Curie temperature T-C, the saturation moment M-S and the magnetocrystalline anisotropy field H-A are derived to be 467 K, 35.1 mug f.u.(-1) and 69.4 kOe, respectively.