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Abstract Polycrystalline powders of Mn5-xFexSi3 (x = 2.5, 3.0, 3.5, 4.0) compounds (Mn5Si3-type, space group P63/mcm, No. 193) were prepared by solid state reaction of pure Mn, Fe and Si powders under… Click to show full abstract
Abstract Polycrystalline powders of Mn5-xFexSi3 (x = 2.5, 3.0, 3.5, 4.0) compounds (Mn5Si3-type, space group P63/mcm, No. 193) were prepared by solid state reaction of pure Mn, Fe and Si powders under High Vacuum (HV) conditions at T = 1000 °C. Samples were sintered at T = 1100 °C under HV as well as under Ar-4%H2 conditions. X-ray Diffraction (XRD) analysis revealed that the compounds crystallize with hexagonal symmetry in accordance with previous reports. The χac susceptibility measurements for the samples sintered under HV conditions show systematic strengthening of the ferromagnetic (FM) state upon increasing x. The electrical resistivity, ρ, remains metallic for all x, with a very weak temperature dependence at T > 300 K. At T
Journal Title: Journal of Solid State Chemistry
Year Published: 2021
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