Abstract
The influence of SiO 2 layer thickness of (Fe 52Pt 48) 88Cu 12:SiO 2 multilayer nanocomposite films on their structural and magnetic properties were investigated. The films were deposited on (001) textured FePt films, and then annealed at 873 K. The crystalline texture of (Fe 52Pt 48) 88Cu 12:SiO 2 films changes drastically with respect to the thickness of the SiO 2 layers. In the film with 50-Å thick SiO 2 layers, the (111) peak was strong although the (001) orientation is dominant, and self-organized spherical FePtCu particles were formed in the SiO 2 matrix. However, in the film with 19-Å thick SiO 2 layers, flat FePt grains with perfect (001) orientation were obtained. In addition, twins with different crystalline orientations were seen in the above films with different thicknesses of the SiO 2 layers. Accordingly, different perpendicular hysteresis loops were obtained.
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