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Electrical Properties of Nanocomposites

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TLDR
In this article, the state-of-the-art for synthesizing composites of nanometer-sized phases (metal, semiconductor or ceramic) dispersed in a matrix has been reviewed.
Abstract
The present state-of-the-art for synthesizing composites of nanometer-sized phases (metal, semiconductor or ceramic) dispersed in a matrix has been reviewed. Both dc and ac electrical properties of different nanocomposites synthesized have been described. The theoretical models used to explain the experimental results are discussed. It appears that there is a need to have newer theoretical models developed to understand the ac electrical properties of metal-ceramic nanocomposites.

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Citations
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Journal Article

Self-organization of CdSe nanocrystallites into three-dimensional quantum dot superlattices

TL;DR: In this paper, the self-organization of CdSe nanocrystallites into three-dimensional semiconductor quantum dot superiattices (colloidal crystals) is demonstrated.
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Estimation of the physical properties of nanocomposites by finite-element discretization and Monte Carlo simulation

TL;DR: This paper reviews and enhances numerical models for determining thermal, elastic and electrical properties of carbon nanotube-reinforced polymer composites and validated by comparison with various experimental datasets reported in the recent literature.
Journal ArticleDOI

Preparation of alumina–silica–nickel nanocomposite by in situ reduction through sol–gel route

TL;DR: In this paper, the presence of nickel particles of size ∼20nm in the nano-pores of an alumina-silica nanocomposite has been detected using X-ray diffraction and transmission electron micrograph.
Journal ArticleDOI

Preparation of silica-molybdenum carbide nanocomposite by in situ reduction

TL;DR: In this paper, the average particle size of molybdenum carbide is in the range of 5-15 nm and the detailed XRD analyses coupled with thermodynamic arguments show that reduction of ammonium moly bdate is predominantly by in situ generated hydrogen.
Journal ArticleDOI

Frequency dependent magnetoconductivity and conductivity study in Ni-dispersed silica nano-composite produced by sol-gel technique

TL;DR: The low frequency (20 Hz to 1 MHz) ac conductivity and magnetoconductivity behavior of ceramic nanocomposite (Ni-SiO2) at low temperature down to 77 K are reported in this article.
References
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Journal ArticleDOI

Electrical conduction in sol-gel derived glass-metal nanocomposites

TL;DR: In this paper, a glass-metal nanocomposites involving iron, nickel and copper in a silica glass matrix have been prepared as films on glass substrates by the sol-gel route.
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Anomalous Hall effect in granular Fe/SiO 2 films in the tunneling-conduction regime

TL;DR: In this paper, it was shown that the Hall effect in Fe/SiO2 nanocomposite films in the activational tunneling conduction range is anomalous, i.e., the Hall resistivity ρh is proportional to the magnetization and is due to the spin-orbit interaction.
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The electrical properties of ultrathin gold films during and after their growth on glass

T Andersson
- 21 Apr 1976 - 
TL;DR: In this paper, the authors describe a model where the applied field stretches the particles causing a decrease in the tunnelling length and making the films metallic continuous at an average thickness of 53+ or 13 AA.
Journal ArticleDOI

Thermally activated conductivity and current-voltage characteristic of dielectric phase in granular metals

TL;DR: In this paper, a model of thermally activated linear and high-field nonlinear conductivity of a dielectric phase in granular metals (nanocomposites) was proposed.
Journal ArticleDOI

Optical absorption of composites of nanocrystalline silver prepared by electrodeposition

TL;DR: In this article, the electrical conductivity of polystyrene nanocomposites with average diameters in the range 10.3-25.7 nm has been investigated for optical absorption characteristics in the wavelength range 250-600 nm.
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