Study Of Magnetic And Structural Properties Of Powders Of The Fe90Al10 System Obtained By Mechanical Alloying
Estudio de las propiedades magnéticas y estructurales de polvos del sistema Fe90Al10 obtenidos por aleamiento mecánico


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In this work we report the study of the magnetic and structural properties of the Fe90Al10 system obtained by mechanical alloying, for the manufacture of targets that will be used to produce thin films by sputtering. Samples in powder form were prepared using the Mechanical Alloying technique with a mass ratio of balls / sample mass, of 10: 1, in an argon atmosphere with stainless steel balls and jugs of the same material, and with 48 and 72 milling hours. Magnetic and structural characterization was performed by Mössbauer Spectroscopy (MS), Vibrating Sample Magnetometry (VSM) and X-Ray Diffraction (XRD).
The Mössbauer spectrum of the powders was adjusted with a ferromagnetic component corresponding to three ferromagnetic sites showing an average hyperfine field of 29.1 T for the samples with 48 hours of milling and 25.4 T for the samples with 72 hours of milling
The refinement of the XRD patterns was performed using the Rietveld method by means of the GSAS program showing in all diffractograms the FeAl-BCC phase with lattice parameters 2.886 Å and 2.889 Å for the milling of 48 and 72 hours respectively. The hysteresis cycles of the Fe90Al10 system under study show that it is a magnetically soft material.
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