Abstract
The (Fe1−xMnx)17Gd2 (x = 0.0–0.4) compounds were prepared by arc melting method, then annealed at 700 °C for two weeks. The effect of Mn-doping on the structure and magentic properties were studied by X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The crystal structure of (Fe1−xMnx)17Gd2 maintains the Th2Znl7-type rhombohedral structure, and the unit cell volume and lattice parameter a, b and c of (Fe1−xMnx)17Gd2 increase with the addition of Mn content. With the increase of Mn-doping, the magnetic-type of (Fe1−xMnx)17Gd2 compounds obviously transform from ferromagnetism to antiferromagnetism, and the saturation magnetization (Ms) can be tuned continuously from 80 Am2/kg at x = 0.0 to ~0 Am2/kg at x = 0.4. At the same time, the Curie temperature (TC) of compounds reduced to room temperature. It indicates that Mn doping can effectively tune the structure, magnetic-type and TC of Fe17Gd2 compound.
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