Dielectric and Impedance Spectroscopic Investigation of (3-Nitrophenol) -2,4,6-Triamino-1,3,5- Triazine: An Organic Crystalline Material

Abstract

This article presents the investigation of dielectric and impedance spectroscopic properties of an organic product of 3-nitrophenol -2,4,6-tri amino-1,3,5- triazine (3NPTAT) single crystal, synthesized from melamine and m-nitrophenol. Comprehensive dielectric studies and charge transportation properties of the grown 3NPTAT crystal are given. The dielectric characteristics of the specimen were carried out in the frequency range of 50 Hz and 5 MHz at different temperatures, namely, 313 K, 333 K, 353 K, and 373 K. From the spectra, it was observed that the slowdown occurs at low temperatures, and the hopping mechanism takes place based on localized charge carriers. The impedance spectroscopic results indicate that there is a single relaxation process that occurs at high frequencies. The variation detected in the material properties of 3NPTAT corresponding to the temperature and frequency has been discussed in detail.

Complex dielectric-impedance spectroscopic studies of magnetite added chitin biopolymer

“…As the temperature increases, a slight shift in the peak position towards smaller frequency is also observed, indicating change in relaxation time (τ). The change in position and broadness of the peaks with temperature indicates a thermally activated relaxation mechanism in our sample [14,31] . Utilizing this feature, we calculated the activation energy Ea in the following manner.…”

“…This is in agreement with the trends reported by other researchers in the field [31,[36][37][38] . As the frequency increases appreciably, ε′ also decreases appreciably due to decrease of the mentioned polarizations [14] . It is important to mention here that the permittivity observed in our sample is much higher than the permittivity reported in the pristine chitin sample [19,39] .…”

“…Complex impedance spectroscopic studies of dielectric properties of materials provide significant information about the correlation between the electrical properties and the microstructure, specifically the grains, grain boundaries and the material-electrode interface. This information is particularly useful in optimization of design parameters for applications in a variety of domains [14] .…”