Abstract
The phase formation in the solid solution range of Zr in Fe 17Gd 2 phase has been investigated by X-ray diffraction, electron probe microanalysis, and differential scanning calorimetry. Partial substitution of Zr for Gd stabilizes the hexagonal phase Fe 17(Gd,Zr) 2 (space group P6 3/ mmc), which appears in the Fe–Gd binary system as a high temperature phase. Zr atoms show a preference to substitute Gd atoms at the crystallographic (2 b) site. The substitution of Gd by Zr leads to an increase in the mean magnetic moment per formula unit up to 15%. The intrinsic magnetic properties of the rhombohedral and hexagonal modification of Fe 17Gd 2 are comparable.
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