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Chemical synthesis of SmCo5/Co magnetic nanocomposites

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Abstract

A three-step chemical synthesis of SmCo5/Co nanocomposites was developed. Firstly, the Co–Sm(OH)3–Ca(OH)2 precursors were prepared by co-precipitation. Secondly, SmCo5 particles were obtained by reductive annealing of the precursors. At last, the SmCo5/Co nanocomposites were achieved by chemical deposition based on SmCo5 particles. The SmCo5/Co nanocomposites contain hard magnetic phase of SmCo5 with about 100 nm in size and soft magnetic phase of Co with about 8 nm in size, exhibiting independent two-phase structure without alloying. Compared to that of single-phase SmCo5 particles, the saturation magnetization of SmCo5/Co nanocomposites is increased by 27.5%. The synthesis provides a new route to fabricate SmCo-based nanocomposites.

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Acknowledgements

This study was financially supported by the National Natural Science Foundation of China (No. 51471016) and the Key Natural Science Foundation of Beijing (No. 2151002).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Beihang University, Beijing, 100191, China

    Run-Bo Lu, Zhen-Hui Ma, Tian-Li Zhang & Cheng-Bao Jiang

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  1. Run-Bo Lu
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  2. Zhen-Hui Ma
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  3. Tian-Li Zhang
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  4. Cheng-Bao Jiang
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Correspondence to Tian-Li Zhang.

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Lu, RB., Ma, ZH., Zhang, TL. et al. Chemical synthesis of SmCo5/Co magnetic nanocomposites. Rare Met. 38, 306–311 (2019). https://doi.org/10.1007/s12598-016-0811-7

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  • DOI: https://doi.org/10.1007/s12598-016-0811-7

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