Abstract
Magnetoplumbite-type (M-type) hexagonal strontium ferrite particles were synthesized by hydrothermal method as the materials. Then, the precursors were calcinated at 1000 °C for two different time (200 and 300 min). The phase composition, micro-morphology and magnetic properties of the particles were investigated by X-ray powder diffraction analysis, scanning electron microscopy, and vibrating sample magnetometer. At hydrothermal temperature ranging from 220 to 230 °C, the phase of M-type hexaferrites includes small amounts of impurities phases, such as α-Fe2O3. The result shows that the single M-type phase was obtained when the hydrothermal temperature is 240 °C. The particles appear in hexagonal plate-like shape and the size of grain is about 400 nm. The effect of sintering time on magnetization and coercivity was studied in this paper.
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Acknowledgements
The authors acknowledge the financial support from the National Natural Science Foundation of China under Grant Nos. 51272003, 51472004, 11375011 and 21271007, the Natural Science Foundation of Anhui province under Grant Nos. 1408085MA12, the Key Program of the Education Department of Anhui Province (Grant Nos. KJ2013B057 and KJ2012A027) from the Research Fund for the Doctoral Program of Higher Education of China under project 20123401110008.
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Zhang, C., Liu, X., Rehman, K.M.U. et al. Structural and properties of hydrothermally synthesised M-type hexaferrites. J Mater Sci: Mater Electron 28, 4593–4597 (2017). https://doi.org/10.1007/s10854-016-6096-7
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DOI: https://doi.org/10.1007/s10854-016-6096-7