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Influence of Oxygen Contamination on Magnetic Properties of Amorphous and Nanocrystallized FeCuSiNbB Thin Films

Journal Solid State Phenomena (Volumes 152 - 153)
Volume Magnetism and Magnetic Materials
Edited by N. Perov
Pages 3-6
DOI 10.4028/www.scientific.net/SSP.152-153.3
Citation Johan Moulin et al., 2009, Solid State Phenomena, 152-153, 3
Online since April, 2009
Authors Johan Moulin, Bhaskar Kaviraj, El Houcine Oubensaïd, Francisco Alves, Uday P. Deshpande, Ajay Gupta, Elisabeth Dufour-Gergam
Keywords Amorphous, Magnetism, Nanocrystalline, Oxygen, Thin Film
Abstract

Thin films of amorphous FeCuSiNbB alloy have been deposited by RF sputtering with various deposition rates. The bulk oxygen content has been characterized using EDS and XPS. Its dependence on deposition rate shows that water vapour in the sputtering chamber is at the origin of the contamination. It allows also estimating the adsorption coefficient of the oxygen on the sample to be around 15 % at 350 K. The magnetic hardness and the resistivity increase with the contamination in oxygen. In devitrified films, this increase is also related to an enrichment of the residual amorphous matrix in oxygen.

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