Limits...
Influence of semiconductor and metal nanoparticles on the dielectric properties of ionic matrix cadmium octanoate.

Zhulai D, Fedorenko D, Kovalchuk A, Bugaychuk S, Klimusheva GV, Mirnaya TA - Nanoscale Res Lett (2015)

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Institute of Physics of National Academy of Sciences of Ukraine, Nauky prosp., 46, Kyiv, 03028 Ukraine.

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.

No MeSH data available.


Related in: MedlinePlus

Dependence of the anisotropy of the conductivity on the concentration of CdS and Au nanoparticles in glassy phase.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4385103&req=5

Fig6: Dependence of the anisotropy of the conductivity on the concentration of CdS and Au nanoparticles in glassy phase.

Mentions: The anisotropy of conductivity in the smectic phase of the nanocomposites is smaller than that in the glassy state. With an increase of the NPs concentration, the conductivity anisotropy increases for the smectic phase and decreases for the glassy phase. This once again proves that the CdS and Au NPs affect the ionic conductivity in both phases of the nanocomposite in a different way (Figures 6 and 7) (Table 3).Figure 6


Influence of semiconductor and metal nanoparticles on the dielectric properties of ionic matrix cadmium octanoate.

Zhulai D, Fedorenko D, Kovalchuk A, Bugaychuk S, Klimusheva GV, Mirnaya TA - Nanoscale Res Lett (2015)

Dependence of the anisotropy of the conductivity on the concentration of CdS and Au nanoparticles in glassy phase.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385103&req=5

Fig6: Dependence of the anisotropy of the conductivity on the concentration of CdS and Au nanoparticles in glassy phase.
Mentions: The anisotropy of conductivity in the smectic phase of the nanocomposites is smaller than that in the glassy state. With an increase of the NPs concentration, the conductivity anisotropy increases for the smectic phase and decreases for the glassy phase. This once again proves that the CdS and Au NPs affect the ionic conductivity in both phases of the nanocomposite in a different way (Figures 6 and 7) (Table 3).Figure 6

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Institute of Physics of National Academy of Sciences of Ukraine, Nauky prosp., 46, Kyiv, 03028 Ukraine.

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.

No MeSH data available.


Related in: MedlinePlus