Persons

Interaction of the electromagnetic radiation with the magnetofunctionalized CNT-nanocomposite is considered within the model of distributedrandom resistive-inductance-capacitor contours. The approach is based on the presentation of the nanocomposite as a system consisting of CNT matrix, ferromagnetic nanoparticles and interfaces between CNT and nanoparticles. Calculations reveal a wide spectrum of possible resonance phenomena caused both by the presence of contours and peculiarities of CNT nanocomposite by itself.

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A model of the nucleation thermodynamics, which takes into account the surface tension value, has been developed. The experiments on formation of the iron clusters formed during the process of ferrocene clusters pyrolysis at various temperatures have been conducted. Based on the theoretical and experimental data the methods for determining the temperature dependence of the surface tension of nano-dimensional clusters have been developed, and the influence of this parameter on the size distribution of clusters has been shown.

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The possibility of the synthesis of carbon nanotubes by the method of chemical deposition of acetylene at 400-800 °C temperature on the surface of a metal film of amorphous alloy Ni-Ta-N with low nickel content (~ 25 at.%) has been demonstrated. It has been shown that an addition of nitrogen into the Ni-Ta alloy promotes the formation of tantalum nitride and extrusion on the surface of the nickel clusters, acting as a catalyst in the growth of carbon nanotubes. The Raman spectroscopy has revealed that while increasing the temperature of the synthesis process the quality of the carbon nanotubes is improved.

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The thermodynamics of the metal nanocluster formation has been developed. An expression for the distribution function of clusters by sizes depending on their production condition has been obtained. It has been shown that the surface tension plays an important role in the cluster formation. The surface tension coefficient value for the iron clusters at 950°C has been found.

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