Eur. Phys. J. Appl. Phys.
Volume 68, Number 2, November 2014
|Number of page(s)||6|
|Published online||15 October 2014|
Structural and Mössbauer studies of evaporated Fe100–xPdx thin films
Research unit UR-MPE, University of Boumerdes, 1 Avenue de l’Independance, Boumerdes
2 Nuclear Research Centre of Algiers, 2 Bd Frantz Fanon, BP 399, Algiers, Algeria
3 ENMC Laboratory, University of Setif, El Bez, Sétif 19000, Algeria
4 GPM, UMR 6634-CNRS, University Rouen, France
a e-mail: firstname.lastname@example.org
Revised: 8 July 2014
Accepted: 7 August 2014
Published online: 15 October 2014
In order to study the influence of palladium atom on structural and hyperfine properties, Fe100–xPdx films (x = 15, 20 and 36 at.%) were deposited by evaporation method onto a Si (1 0 0) substrate. They were then characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and conversion electron Mössbauer spectroscopy (CEMS). X-ray diffraction analysis shows the presence of supersaturated solid solution with bcc structure for Pd concentration of 15% and 20%. However, for 36% of Pd, in addition to the supersaturated α-FePd (bcc) phase, another disordered FePd3 phase with fcc structure is present. The grain size did not change with Pd concentration and was about 11 nm, and the lattice parameter increased from 0.287 Å to 0.290 Å with an increasing Pd concentration. The adjustment of Mössbauer spectra confirms the results obtained by X-ray diffraction. Moreover, the Mössbauer spectra have shown that a magnetic texture is present for samples with 20 and 36%. For these Pd concentrations, we believe that a development of an out-of plane magnetic anisotropy occurs in our films.
© EDP Sciences, 2014
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