Volume 1, Issue 2, 2021, Pages 1 - 6

Author(s) : Aqeel Al-Hamaidah* ¹ , Malek Bagheri Harouni ² , Mahmood Rezaee Roknabadi ³ , Alireza Roknabadi ⁴ , Reza Ghanbari ⁵

Abstract :
Abstract In this research, zinc-manganese ferrite ZnMnFe2O4 nanoparticles with superparamagnetic properties have been synthesized by hydrothermal-sonochemical method. The contamination of spinel structures by magnetic ions, which is done in order to increase the magnetic properties of nanoparticles, is always associated with the challenge of controlling the size, shape and distribution of nanoparticles. For this reason, the choice of synthesis method becomes very important. In this research, in order to obtain nanoparticles with suitable particle distribution and magnetic properties, spinel iron oxide was doped with zinc and manganese atoms by a combination of hydrothermal and sonochemical methods. The microstructural properties of the spinel structure were investigated using X-ray diffraction, the morphological properties using a scanning electron microscope, and the magnetic properties using a vibrating sample magnetometer. The obtained ZnMnFe2O4 nanoparticles were well distributed and showed excellent magnetic properties. The saturation magnetization of these nanoparticles was 66.5 emu/g and its incidence field was less than Oe 8. Therefore, these nanoparticles are expected to have promising applications in fields such as biomedicine and magnetic memories. Furthermore, we hope that this new approach can pave the way for the synthesis of other inorganic nanomaterials with good monodispersity. Key words: superparamagnetism, hydrothermal-sonochemical method, spinel structure, zinc-manganese ferrite

Keywords :
superparamagnetism, hydrothermal-sonochemical method, spinel structure, zinc-manganese ferrite