Abstract
Mn1−xZnxFe2O4 (x = 0.0−1.0) NPs (MZF NPs) were synthesized by a citric acid assisted sol–gel process. MZF NPs show superparamagnetic characteristics at room temperature. Saturation magnetization (Ms) of MnFe2O4 NPs is 70.52 emu/g is very close to the bulk saturation magnetization value of 80 emu/g. The observed Ms = 35.90 emu/g value for ZnFe2O4 particles is much greater than the bulk Ms value of 5 emu/g. This case is attributed to cation distribution change from normal spinel to mixed structure. The small Mr/Ms ratios (the maximum 0.147) specify uniaxial anisotropy in the Mn1-xZnxFe2O4 NPs. The average crystallite diameter (D mag) was evaluated from magnetic analyses. The obtained D mag values are between 27.67 and 33.60 nm and this range is in great accordance with the results calculated from XRD measurements. Among the NPs, the samples with more zinc content show higher diffuse reflectance. The optical direct band gap of MZF NPs is found to decrease from 2.1 to 1.90 eV as the zinc content rises.
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This work was supported by Fatih University under BAP Grant No.: P50021301-Y (3146).
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Demir, A., Güner, S., Bakis, Y. et al. Magnetic and Optical Properties of Mn1−xZnxFe2O4 Nanoparticles. J Inorg Organomet Polym 24, 729–736 (2014). https://doi.org/10.1007/s10904-014-0032-1
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DOI: https://doi.org/10.1007/s10904-014-0032-1