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Issue 22, 2019
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Fabrication, characterization, and magnetic properties of exchange-coupled porous BaFe8Al4O19/Co0.6Zn0.4Fe2O4 nanocomposite magnets

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Abstract

Fabrication of exchange-coupled nanocomposite magnets has been considered to be the most effective method to achieve the high energy product for advanced permanent magnet applications. In this work, we report a facile auto-combustion synthesis to prepare porous exchange-coupled hard–soft ferrite-based magnetic BaFe8Al4O19x wt% Co0.6Zn0.4Fe2O4 nanocomposites (where x = 10, 20, 30 and 40), which realize an effective exchange-coupled interaction when the x value is less than 30. Compared with BaFe8Al4O19, the optimized nanocomposite with 20% Co0.6Zn0.4Fe2O4 shows a 70.3% increase in Ms and a 60.4% enhancement in Mr and maintains a high Hc value of 8.8 kOe. The work demonstrates that the auto-combustion synthesis is a promising approach for the fabrication of high-performance ferrite-based permanent magnets.

Graphical abstract: Fabrication, characterization, and magnetic properties of exchange-coupled porous BaFe8Al4O19/Co0.6Zn0.4Fe2O4 nanocomposite magnets

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Publication details

The article was received on 20 Feb 2019, accepted on 11 May 2019 and first published on 13 May 2019


Article type: Communication
DOI: 10.1039/C9NR01544B
Nanoscale, 2019,11, 10629-10635

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    Fabrication, characterization, and magnetic properties of exchange-coupled porous BaFe8Al4O19/Co0.6Zn0.4Fe2O4 nanocomposite magnets

    G. Han, Y. Liu, W. Yang, S. Geng, W. Cui and Y. Yu, Nanoscale, 2019, 11, 10629
    DOI: 10.1039/C9NR01544B

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