Abstract
The films of Co1−xMnxFe2O4 (x = 0 − 0.4) were prepared on the substrates of Pt (111)/Ti/SiO2/Si by the sol-gel method. The effect of mole fraction of doping Mn ions on the microstructure, ferromagnetism and optic properties was investigated. The results show that, when x is less than 0.4, Mn ions have dissolved into the crystal lattices of CoFe2O4 without forming secondary phases. The surfaces of the films of Co1−xMnxFe2O4 possess polygonal and dense structures. The results of Raman show that Co2+ migrates from octahedral interstice to tetrahedral interstice when x is greater than 0.2. The results of XPS indicate that, in the Co0.8Mn0.2Fe2O4 film, Fe ions exist in the form of Fe2+ and Fe3+ and Mn ions exist in the form of Mn2+ and Mn3+. The results also show that, with increasing mole fraction of Mn ions, the values of saturation magnetization increase firstly, then decrease. When x is equal to 0.2, there is the maximum value of saturation magnetization (443.12 emu·cm−3).
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The authors acknowledge the financial support from Joint Fund of National Natural Science Foundation of China (U19A2087).
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This study was supported by National Natural Science Foundation of China [Grant No. U19A2087].
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MS designed the work, revised the manuscript in detail, and approved the final version of the manuscript. HC performed all the experimental work, collected and analyzed the data, and wrote the first draft of the manuscript. SD revised the manuscript and approved the final version of the manuscript.
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Shi, M., Chen, H., Du, S. et al. The magnetic properties of Mn-doped cobalt ferrite films prepared by the spin-coating method. J Mater Sci: Mater Electron 34, 1635 (2023). https://doi.org/10.1007/s10854-023-11052-y
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DOI: https://doi.org/10.1007/s10854-023-11052-y