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Enhanced coercivity of La–Co substituted Sr–Ca hexaferrite fabricated by improved ceramics process

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Abstract

In order to fabricate high magnetic performance La–Co substituted Sr–Ca hexagonal ferrites, an improved ceramics process was proposed in this study. The particle size of the ferrite powder was measured by laser diffraction particle size analyzer. The microstructures of the sintered ferrites were observed by scanning electron microscopy. The magnetic properties of the sintered ferrite magnets were measured by B–H loop recorder. The results show that, sub-micrometer ferrite powder with narrow particle size distribution could be produced by microwave reheating–remilling treatment. Ferrite magnet with fine grained microstructure and enhanced coercivity could be synthesized by using the powder as precursor.

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Acknowledgments

This research is supported by the Opening Project of Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology (Project No. ASMA201508), and Scientific Foundation of Nanjing Institute of Technology (Project No. YKJ201506).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing, 211167, China

    Li Yuping

  2. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing, 211167, China

    Li Yuping

  3. Hengdian Group DMEGC Magnetics Co., Ltd, Jinhua, 322118, China

    Wu Yunfei & Bao Daxin

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  1. Li Yuping
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  2. Wu Yunfei
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  3. Bao Daxin
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Correspondence to Li Yuping.

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Yuping, L., Yunfei, W. & Daxin, B. Enhanced coercivity of La–Co substituted Sr–Ca hexaferrite fabricated by improved ceramics process. J Mater Sci: Mater Electron 27, 4433–4436 (2016). https://doi.org/10.1007/s10854-016-4314-y

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  • DOI: https://doi.org/10.1007/s10854-016-4314-y

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