Elevated interest is gathered around hybrid nanostructured materials, due to their combined physical−chemical properties. In this article, the synthesis and characterization of nanoparticles consisting of both Ni x P y and metallic Ni are reported. The nanoparticles have a core/shell structure, and they most probably combine both semiconducting and magnetic properties. To the best of our knowledge, this is the first time hybrid material with Ni, as well as 3D self-assembly of such material, is reported.

We report on the deposition of thin nanolayers of MoS2 material on carbon nanofibers (CNFs) and multiwalled carbon nanotubes (CNTs) by in situ thermal decomposition of (NH4)2MoS4 in oleylamine. The synthesized MoS2@CNF and MoS2@CNT nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS), and Raman spectroscopy. TEM results indicate that CNFs, as well as CNTs, provide an excellent template for the deposition and growth of MoS2 nanolayers. 2–5 layers thick MoS2 nanocrystals and 5–10 nm wide form on the CNFs, while monolayers of the same width form on the CNTs. The advantage of the applied synthetic method is that it provides control over the material morphology, leading to uniform and full cover of the CNFs and CNTs with no individual formations of material away from the carbon. To the best of our knowledge, the deposition of MoS2 on CNFs has not been reported elsewhere.

The fabrication of ∼3 nm FePt nanoparticles and detailed studies of the effect of the annealing conditions (temperature and time) on the formation of the face-centred tetragonal phase and on the magnetic properties are described. Additionally, the effect of the precursor molar ratio on the final product and the composition of the as-prepared samples were studied. The main criteria for the determination of the best alloy are the properties desired for applications in the field of magnetic recording media.