Structural, morphological, and electrical properties of silver-substituted ZnAl₂O₄nanoparticles

Abstract

In this paper, nanoparticles of (x = 0.05 and x = 0.1) were synthesized by the sol–gel auto-combustion method and characterized by various techniques.

Optical and dielectric properties of silver-substituted ZnAl2O4 spinels synthesized using a sol-gel auto-combustion method

“…In addition, we notice a minority phase attributed to silver metal (Ag), as detailed in our previous work. 19 …”

“…These findings are in good agreement with our previously published results regarding the electrical investigation of these two material. 19 …”

“…The losses are minimized at high frequencies and the dipoles contribute to the polarization because their polarization can orient with the electric eld due to their high conductivity. 19,58 Thus, we notice that the value of the dielectric loss increases with an increase in temperature due to the electrical conductivity. 59 In this context, these results suggest that the two samples can be used in various technological applications, including fuel cells, ceramic technology, and microwave technology.…”

“…0.07 g Silver nitrate (99.8% purity, Sigma-Aldrich), 0.63 g Zinc oxide (98% purity, Sigma-Aldrich), and 6.07 g Aluminum nitrate (98% purity, Sigma-Aldrich) were used as precursors to prepare the samples by the sol-gel auto-combustion method. 19 All precursors were dissolved in distilled water (50 ml). After that, 5.76 g citric acid (98% purity) was added.…”

“…These ndings are in good agreement with our previously published results regarding the electrical investigation of these two material. 19 The temperature dependence of the real 3 0 and imaginary 3 00 permittivity as a function of temperature at different frequencies (0.1 KHz, 1 KHz, 10 KHz, and 1 MHz) for the two compounds is illustrated in Fig. 8 and 9.…”