Electrical conduction mechanism in ZnS nanoparticles

Structure-Property Correlation in Ir Transparent Zinc Sulphide (Zns) Ceramics Under Chemical Vapour Deposited & Hot Iso-Statically Pressed Conditions

“…CVD sample has given an activation energy of 0.42eV and decreased to 0.38eV with HIP treatment. The calculated activation energy values are in good agreement with the reported values [15]. It can be observed that Ea decreased with HIP treatment which can be attributed to an increase the charge carrier mobility and decrease in defect levels.…”

“…Whereas, in the high frequency region, dielectric constant is almost independent of frequency and is observed to be same in both the samples. In the lower frequency regime, dipoles in atomic structure are still able to follow the external field oscillation, whereas, in the high frequency region, these dipoles begin to fall behind the external field and the value of dielectric constant tends to change slightly, which indicates the saturation state of polarization [15][16][17]. Figure 4(a-c) shows the variation of real part of impedance with frequency at different temperatures of ZnS ceramics.…”

Richardson-Schottky transport mechanism in ZnS nanoparticles

“…31,32 In order to obtain the value of the dielectric constant of the material, the real and imaginary parts of the impedance have been measured in our previous article. 30 The relative dielectric constant of the material ε r has been calculated using the following equation. Where ω = 2πf is the angular frequency, Z* is the complex impedance and Z ′′ is the imaginary part of the complex impedance, C 0 = Aε 0 /d is the capacitance, where A is the cross-sectional area.…”

“…The detailed synthesis process has been described in our previous article. 30 ZnS nano powder has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for structural and morphological information. Synthesized ZnS nano powder, consisting of nanoparticles was compressed into cylindrical disk shaped pellets (of 10 mm diameter and thickness ∼2 mm) using steel die by applying load of 3 tons.…”

Structural, dielectric and impedance spectroscopy analysis of Ba5CaTi1.94Zn0.06Nb8O30ferroelectric ceramic

“…This non-ideal grain boundary behavior can be due to the presence of more than one relaxation process. 45,46 The constant phase element (Q) is evaluated by the following relationship 20,47 C…”