Eur. Phys. J. Appl. Phys.
Volume 58, Number 1, April 2012
|Number of page(s)||5|
|Published online||29 March 2012|
Influence of annealing on the structural properties of evaporated CoxCr1−x/Si(1 0 0) and CoxCr1−x/glass thin films
Laboratoire d’Etudes des Surfaces et Interfaces des Matériaux Solides (LESIMS), Department of Physics, Ferhat Abbas University of Setif, Setif 19000, Algeria
2 IPCMS-GEMME, UMR-CNRS, Université Louis Pasteur, 23 rue du Loess, B.P. 43, 67034 Strasbourg Cedex 2, France
a e-mail: email@example.com
Revised: 24 February 2012
Accepted: 5 March 2012
Published online: 29 March 2012
Series of CoxCr1−x thin films have been evaporated under vacuum onto Si(1 0 0) and glass substrates, x ranging from 0.80 to 0.88; these chemical composition values are provided by modeling Rutherford Backscattering (RBS) spectra using SIMNRA program. Thickness ranges from 17 to 220 nm. Microscopic characterizations of the films have been performed with X-ray diffraction (XRD) measurements. The samples have been annealed for 1 h at 700 °C. All the as deposited samples are polycrystalline, with an hcp structure and show a 〈0 0 0 1〉 preferred orientation. The annealed samples, on the contrary, present hcp and fcc phases. The as deposited films are under a compressive stress while the annealed films are under a tensile stress. Grain sizes increase with chromium content decrease and are higher for the annealed films. Excellent orientations of the CoCr crystallites around the normal to the film plane have been observed, the full width at half maximum (FWHM) ranging from 0.49° to 0.79°.
© EDP Sciences, 2012
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