Structural, dielectric relaxation and electrical conductivity behavior in MgO powders synthesized by sol–gel

Magnesium oxide powders (MgO) were synthesized via a sol–gel process (SG). The crystalline structure, particle size, and roughness weight loss were investigated through X-ray diffraction, atomic force microscopy, Differential Thermal Analysis (DTA) and Thermal Gravimetric Analysis (TGA). X-ray diffraction patterns revealed that MgO powders obtained were crystallized. The crystallite size of the obtained MgO powders is equal to 79.8 nm. The morphology is displayed as granular and porous. The RMS value is determined as 0.3158 nm whereas the weight loss is around 0.70%. Complex impedance spectroscopy was used to examine electrical properties. The dielectric phenomena and electrical conductivity properties of MgO powders were studied to improve the conductivity. The activation energy of the MgO powders in the temperature study was found to be 0.178 eV.