INFLUENCE of SYNTHESIS pH on STRUCTURAL, DIELECTRIC and MAGNETIC PROPERTIES of MnFe2O4

Authors

DOI:

https://doi.org/10.15421/jchemtech.v33i1.318927

Keywords:

MnFe2O4, coprecipitation, acidity, ferritization

Abstract

Dispersed manganese ferrite particles were obtained by a combined co-precipitation method at different pH of the initial solution (7–12). The structural, morphological, optical and magnetic properties of the synthesized nanoparticles were characterized using X-ray diffraction, scanning electron microscopy, and vibrational magnetometry. The XRD results showed that MnFe2O4 has a cubic spinel crystal structure with an average crystallite size of ~14–65 nm. The presence of additional phases is observed at low pH and pH greater than 12. Ferritization significantly depends on pH, which affects the phase composition of the products and the size of the crystallites. In addition, with an increase in pH from 7 to 12, the percentage of microstresses and the density of dislocations decreases. The obtained MnFe2O4 samples exhibit ferrimagnetic properties, the highest saturation magnetization value of 56.8 Emu/g is achieved at pH 10. In addition, the coercive force changes from 5 to 50 Oe with increasing pH due to the increase in crystallite size.

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Published

2025-04-15

Issue

Vol. 33 No. 1 (2025): Journal of Chemistry and Technologies

Section

Chemical Technology

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