Abstract
Magnesium oxide (MgO, pure) and zinc added MgO nanoparticles were synthesised by a simple microwave assisted solvothermal method. The concentrations of impurity used in the present work were 0.25 M and 0.50 M. All samples were annealed at 400°C for 1 h to improve the ordering. The prepared pure and zinc added magnesium oxide nanoparticles were characterised by powder X-ray diffraction (PXRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). PXRD studies of pure and zinc added MgO nanoparticles showed that all samples belong to crystalline nature with cubic structure. The grain size of all samples were determined from the XRD results and it belongs to nano meter scale. The EDS confirmed the presence of zinc, magnesium and oxide elements in the respective prepared samples. The scanning electron microscope images confirmed that the prepared samples possess nanometer dimensions. The electrical properties such as AC conductivity, dielectric constant and dielectric loss were measured at different temperatures in the different frequency range by involving the impedance analyser of all the prepared samples.
Highlights
Metal oxides such as magnesium oxide (MgO), iron oxide (FeO) and copper oxide (CuO) are inorganic compound and most of them exhibit a rock salt structure
Microwave assisted zinc added MgO nanoparticles were synthesised by the solvothermal method
The structural and electrical properties of the synthesised nanoparticles were studied with powder X-ray diffraction (PXRD), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and impedance spectroscopy
Summary
Metal oxides such as magnesium oxide (MgO), iron oxide (FeO) and copper oxide (CuO) are inorganic compound and most of them exhibit a rock salt structure. These oxides are widely used as an additive in numerous materials and products such as rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants and first-aid tapes.[1] Mixed metal oxides have found increasing research focus and applications in physics, chemistry, materials science and engineering. These emergent properties have the potential for impacts in electronics, mechanical fields and it is expected that the addition of zinc into the MgO nanoparticles will lead to a great impact on the engineering fields
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