Functional Nanocomposites Formation by Electrochemical Deposition of Metals and Semiconductors into Porous Silicon

The paper concerns the study of formation of nanocomposites by electrochemical deposition of metals and semiconductors into the porous silicon. Ni and ZnO were used as experimental materials for deposition. The influence of deposition process parameters and structure of initial porous silicon substrates on morphology and composition of formed metal or semiconductor nanostructures are studied. Obtained nanocomposites demonstrated high filling factor and uniformity. Porous silicon/Ni nanocomposites showed strong magnetic anisotropy. Porous silicon/ZnO nanocomposites after thermal annealing had intensive photoluminescence in the visible range. Applications of obtained nanocomposites in the magnetic and optoelectronic devices discussed as well

Functional Nanocomposites Formation by Electrochemical Deposition of Metals and Semiconductors into Porous Silicon

The paper concerns the study of formation of nanocomposites by electrochemical deposition of metals and semiconductors into the porous silicon. Ni and ZnO were used as experimental materials for deposition. The influence of deposition process parameters and structure of initial porous silicon substrates on morphology and composition of formed metal or semiconductor nanostructures are studied. Obtained nanocomposites demonstrated high filling factor and uniformity. Porous silicon/Ni nanocomposites showed strong magnetic anisotropy. Porous silicon/ZnO nanocomposites after thermal annealing had intensive photoluminescence in the visible range. Applications of obtained nanocomposites in the magnetic and optoelectronic devices discussed as well

Multiple order parameter configurations in superconductor/ferromagnet multilayers

214512Quantum Matter and Optic

Transport properties of Nb/PdNi bilayers

The transport properties of superconductor/weak ferromagnet Nb/Pd86Ni14 sputtered bilayers have been studied. The critical thickness needed for superconductivity to develop is determined from the dependence of the transition temperature Tc on dNb

Impact of aligned carbon nanotubes array on the magnetostatic isolation of closely packed ferromagnetic nanoparticles

International audienceWe investigate the influence of carbon nanotubes (CNT) aligned array on the magnetic properties of ensemble of densely packed Co nanoparticles (NPs) embedded inside CNT. Each CNT contains only one nanosized Co. Such a special structure was formed by catalyst chemical vapor deposition (CCVD) activated by current discharge plasma and hot filament. The Co NPs, previously deposited onto SiO 2 /Si substrate, acted as a catalyst. By varying the parameters of the CCVD process, we were able to also sputter the substrate instead of CNT growth. Co NPs were used as a mask and the structure of Si-based nano-cones with Co NPs on the top of each cone was formed. Exhaustive investigation of the structural, morphology and crystalline properties of Co nanoparticles were performed. The magnetic properties of two kinds of samples, Co on the Si-based nanocone and Co inside CNT, were differ drastically. In the former case, the magnetic anisotropy of thin-film-type has been observed with large magnetic domains. Whereas for the Co-CNT samples ferromagnetic NPs were magnetically isolated. It was established that the magnetic anisotropy of nanosized Co plays more dominant role than the dipole interaction between Co NPs. The role of the CNT container in this is discussed