STRUCTURE AND MAGNETIC-PROPERTIES OF THE TERNARY COMPOUND GD-3(FE, TI)(29)

The ternary compound Gd-3(Fe, Ti)(29), which has the monoclinic Nd-3(F e, Ti)(29) structure, has ben successfully prepared from a starting co mposition of Gd8.5Fe86Ti5.5 by annealing at 1080 degrees C for 3 d. Th e Gd:Fe:Ti ratio for 3:29, determined by energy dispersive x-ray analy sis (EDAX), is 9.1:85.7:5.2. Thermo-gravimetric analysis gives a magne tic ordering temperature of 524(3) K for Gd-3(Fe, Ti)(29). The lattice parameters, determined by refinement of powder x-ray diffraction data , are a = 10.6409(16) Angstrom, b = 8.5658(9) Angstrom, c = 9.7375(15) Angstrom and beta = 97.017(14)degrees. Fe-57 Mossbauer measurements o n Gd-3(Fe, Ti)(29) yield an average hyperfine field of 24.4(2) T at 29 3 K, which corresponds to an average Fe magnetic moment of about 1.6 m u(B).