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Issue 25, 2018
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Rare-earth-free high energy product manganese-based magnetic materials

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The constant drive to replace rare-earth metal magnets has initiated great interest in an alternative. Manganese (Mn) has emerged to be a potential candidate as a key element in rare-earth-free magnets. Its five unpaired valence electrons give it a large magnetocrystalline energy and the ability to form several intermetallic compounds. These factors have led Mn-based magnets to be a potential replacement for rare-earth permanent magnets for several applications, such as efficient power electronics, energy generators, magnetic recording and tunneling applications, and spintronics. For past few decades, Mn-based magnets have been explored in many different forms, such as bulk magnets, thin films, and nanoparticles. Here, we review the recent progress in the synthesis and structure–magnetic property relationships of Mn-based rare-earth-free magnets (MnBi, MnAl and MnGa). Furthermore, we discuss their potential to replace rare-earth magnetic materials through the control of their structure and composition to achieve the theoretically predicted magnetic properties.

Graphical abstract: Rare-earth-free high energy product manganese-based magnetic materials

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Publication details

The article was received on 05 Mar 2018, accepted on 01 Jun 2018 and first published on 04 Jun 2018

Article type: Review Article
DOI: 10.1039/C8NR01847B
Citation: Nanoscale, 2018,10, 11701-11718
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    Rare-earth-free high energy product manganese-based magnetic materials

    K. Patel, J. Zhang and S. Ren, Nanoscale, 2018, 10, 11701
    DOI: 10.1039/C8NR01847B

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