Abstract
We report a study on the structural and magnetic properties of iron–vanadiumthin films grown in multilayer form and mixed by thermal treatment. Themultilayer samples were annealed at 610°C for times ranging from 10 to 540 min.The samples were structurally characterized by means of x-ray diffraction (XRD)and by x-ray absorption spectroscopy (XAS). The magnetic characterization wascarried out with a conventional alternating gradient magnetometer (AGM) and byconversion electron Mössbauer spectroscopy (CEMS). The XRD result for theas-deposited multilayer shows a high degree of crystallinity while the CEMS resultsuggests an abrupt interface, since no significant contribution from vanadium iniron is observed. After the thermal treatment, the results from XRD show a phasetransformation of the disordered body-centred-cubic structure (α-phase) into a tetragonalstructure (σ-phase)and a subsequent return to the α-phase. Thisα–σ–αoscillation is not reported in the literature available to the authors.
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