Effect of Synthesis Parameter on Crystal Structures and Magnetic Properties of Magnesium Nickel Ferrite (Mg0.5Ni0.5Fe2O4) Nanoparticles

4th International Conference on Advanced Materials Science and Technology

Maulia, R.^1 ; Putra, R.A.^1 ; Suharyadi, E.^1

Department of Physics, Universitas Gadjah Mada, Sekip Utara BLS 21, Yogyakarta, Indonesia^1

关键词: Coprecipitation method;    Cubic spinel structure;    Diffraction rings;    Mg0.5Ni0.5Fe2O4;    NaOH concentration;    Selected area electron diffraction;    Synthesis parameters;    Synthesis temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/202/1/012045/pdf
DOI  :  10.1088/1757-899X/202/1/012045

来源: IOP

【 摘 要 】

Mg0.5Ni0.5Fe2O4nanoparticles have been successfully synthesized by using co-precipitation method and varying the synthesis parameter, i.e. synthesis temperature and NaOH concentration. X-ray Diffraction (XRD) pattern showed that nanoparticles have cubic spinel structures with an additional phase of γ-Fe2O3and particle size varies within the range of 4.3 - 6.7 nm. This variation is due to the effect of various synthesis parameters. Transmission Electron Microscopy (TEM) image showed that the nanoparticles exhibited agglomeration. The observed diffraction ring from selected area electron diffraction showed that the sample was polycrystalline and confirmed the peak appearing in XRD. The coercivities showed an increasing trend with an increase in particle size from 44.7 Oe to 49.6 Oe for variation of NaOH concentration, and a decreasing trend with an increase in particle size from 46.8 to 45.1 Oe for variation of synthesis temperature. The maximum magnetization showed an increasing trend with an increase in the ferrite phase from 3.7 emu/g to 5.4 emu/g possessed in the sample with variations on NaOH concentration. The maximum magnetization for the sample with variations on synthesis temperature varied from 4.4 emu/g to 5.7 emu/g due to its crystal structures.