ELECTRICAL CONDUCTIVITY IN THE QUANTUM-SIZE EFFECTS OF COMPOSITE MATERIALS CONTAINING NANOPARTICLES OF METALS

Boymuratov Fakhriddin Тog‘aymuradovich; Abdurakhmanov Umarbek; Isayev Xamid; Urazaliyev Roziqjon Turanovich

doi:10.17605/OSF.IO/CGAE4

Authors

Boymuratov Fakhriddin Тog‘aymuradovich Tashkent Institute of Textile and Light Industry, Tashkent, Uzbekistan
Abdurakhmanov Umarbek National University of Uzbekistan, Tashkent, Uzbekistan
Isayev Xamid Tashkent Institute of Textile and Light Industry, Tashkent, Uzbekistan
Urazaliyev Roziqjon Turanovich Tashkent Institute of Textile and Light Industry, Tashkent, Uzbekistan

DOI:

https://doi.org/10.17605/OSF.IO/CGAE4

Keywords:

Quantum-size effects, metal-polymer composites; Nanoparticles; Conductivity

Abstract

The interest in nanoobjects can be explained by the fact that reducing materials to nanometer sizes leads to the manifestation of so-called “quantum-size effects” in them, when the sizes of the objects under study are comparable to the de Broglie wavelength of electrons, phonons and excitons. It is found that the percolation-like behaviour of σ and ε, which is observed when the Ni particles are the sizes of 1-3 µm (micro-dispersed particles), gave way to another behaviour characterized by an additional contribution to σ and ε below the percolation threshold when the Ni particles are the sizes of ≤ 30 nm (nanoparticles). This peculiarity of the behaviour of σ and ε of the composites can be explained in the frame of the network hierarchy model of composites, which was proposed recently by Balberg et al.

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