Recrystallization Phenomena in Melt-Spun (Fe100- xVx)75P15C10 Alloys

(Fe100-xVx)75P15C10 (x=0, 5, 10 and 15) semiamorphous alloys were prepared by the melt spinning technique and their structural, thermal and magnetic properties were investigated. The structure of the alloys was studied by X-ray diffraction (XRD) for annealing temperatures of 400 oC to 650 oC within a 30 minute annealing time. The XRD patterns show that the samples contain a BCC structure for temperatures between 400 oC to 450 oC and a hexagonal structure for the temperatures between 500 oC to 650 oC. The lattice parameter of the BCC structure changes from 2.854 to 2.870 Å with the temperature. The lattice parameters a and c for the hexagonal structure are (5.0115.045) Å and (13.676-13.822) Å, respectively. The grain size is found to vary from 10 to 60 nm. The recrystallization temperatures of the amorphous phase volume and weight changes were measured by differential thermal analysis (DTA) and thermo gravimetry (TG), respectively. The saturation magnetization gradually decreases with the increase of the substitution of Fe by V at room temperature (RT). Index Term-Amorphous alloys; Recrystallization; XRD; DTA; Magnetization