title: Influence of semiconductor and metal nanoparticles on the dielectric properties of ionic matrix cadmium octanoate.
abstract: Dielectric properties of ionic composites consisted of cadmium octanoate matrix and semiconductor or metal nanoparticles have been investigated. The nanoparticles of different nature (semiconductor CdS, metal Au, and metal core-semiconductor shell Au-CdS) were chemically synthesized in the smectic A phase of (Cd(+2)(C7H15COO)(-2), CdC8) that was used as a nanoreactor. These nanocomposites are very stable and well ordered; the size and shape of the nanoparticles (NPs) are well controlled during the synthesis. The main aim of the research was to examine the influence of nanoparticles on the dielectric properties of ionic matrix, which has smectic A ordered structure. Electrical characteristics were investigated at different temperatures, which correspond to different phases of the material. The conductivity of nanocomposites has an activation nature. The electrical conductivity anisotropy confirms the structural anisotropy of the nanocomposites. The conductivity of the nanocomposite along the cation-anion layers is higher by 2 orders of magnitude than that across the cation-anion layers. Basing on the experimental data, we proposed the simple model of the charge carriage process.
authors: Institute of Physics of National Academy of Sciences of Ukraine, Nauky prosp., 46, Kyiv, 03028 Ukraine.
authors: Dmytro
authors: D
authors: Zhulai
authors: Institute of Physics of National Academy of Sciences of Ukraine, Nauky prosp., 46, Kyiv, 03028 Ukraine.
authors: Denys
authors: D
authors: Fedorenko
authors: National University of Technologies and Design, Nemirovich-Danchenko 2, Kyiv, 01011 Ukraine.
authors: Alexander
authors: A
authors: Kovalchuk
authors: Institute of Physics of National Academy of Sciences of Ukraine, Nauky prosp., 46, Kyiv, 03028 Ukraine.
authors: Svetlana
authors: S
authors: Bugaychuk
authors: Institute of Physics of National Academy of Sciences of Ukraine, Nauky prosp., 46, Kyiv, 03028 Ukraine.
authors: Gertruda Vasylivna
authors: GV
authors: Klimusheva
authors: V. I. Vernadsky Institute of General and Inorganic Chemistry of National Academy of Sciences of Ukraine, Academician Paladin prosp., 32-34, Kyiv, 03142 Ukraine.
authors: Tetyana Alfredivna
authors: TA
authors: Mirnaya
keywords: Au quantum dots; CdS; Dielectric conductivity; Ionic liquid crystal; Nanocomposite