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Comparative study of magnesium ferrite nanocrystallites prepared by sol–gel and coprecipitation methods

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Abstract

Magnesium ferrite particles consisting of nanocrystallites were synthesized by sol–gel and coprecipitation methods. Their mean crystalline size increased with increasing calcination temperature. At the same calcination temperature, the sol–gel-derived sample always had bigger mean crystalline size than the coprecipitation-derived sample, implying that the sol–gel method facilitated the formation of magnesium ferrite crystallites. Most of the sol–gel-derived magnesium ferrite particles had a lamellar structure consisting of nanocrystallites, which were probably derived from the porous dried gel precursor. The magnesium ferrite particles had superparamagnetic properties at 27 °C, and their saturation magnetization increased with increasing size.

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Acknowledgements

This research was partially financial supported by the Natural Science Foundation of China (project No. 20476071).

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Correspondence to Ming-Wei Li.

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Liu, CP., Li, MW., Cui, Z. et al. Comparative study of magnesium ferrite nanocrystallites prepared by sol–gel and coprecipitation methods. J Mater Sci 42, 6133–6138 (2007). https://doi.org/10.1007/s10853-006-1070-z

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  • DOI: https://doi.org/10.1007/s10853-006-1070-z

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