Non-phenomenological description of complex dielectric permittivity of metal-containing porous glasses

Autor:	T.V. Antropova, V. F. Gromov, Mortko Kozhushner, V. L. Bodneva, E. Axelrod, Genrikh N. Gerasimov, A. Greenbaum, Leonid I. Trakhtenberg, Yu. Feldman
Rok vydání:	2010
Předmět:	Permittivity Nanocomposite Materials science Borosilicate glass Physics::Optics Nanoparticle Dielectric Condensed Matter Physics Electronic Optical and Magnetic Materials Phenomenological model Materials Chemistry Ceramics and Composites Composite material Porous medium Porosity
Zdroj:	Journal of Non-Crystalline Solids. 356:642-646
ISSN:	0022-3093
DOI:	10.1016/j.jnoncrysol.2009.06.051
Popis:	The main aim of this paper is the theoretical and experimental study of the dielectric characteristics of composite materials based on porous non-organic glasses containing metal nanoparticles. Dielectric properties of the materials were investigated using a Broad Band Dielectric Spectrometer (NOVOCONTROL BDS 80) over wide frequency (0.1–105 Hz) and temperature (−120 to 300 °C) ranges. For a description of dielectric response of such composite materials, a non-phenomenological model has been proposed based on the hopping of electrons between glass traps around the metal nanoparticles. The model provided an insight into the dependence of the dielectric properties of the nanocomposites, depending on nature and concentration of nanoparticles, their size distribution, temperature dependence and type of matrix. The results of the model demonstrate the physically justified features.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0748cca7813b0b50b47b98907fa0cbb5 https://doi.org/10.1016/j.jnoncrysol.2009.06.051 Zobrazit plný text záznamu Full Text from ScienceDirect