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Preparation and Magnetic Properties of Anisotropic SmCo5/Co Composite Particles

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

Anisotropic SmCo5/Co nanocomposite powders have been prepared by electroless Co deposition on commercial SmCo5 powders with hydrazine as reducer. The Co particles are mainly in the range of 8–27 nm and form dense/continuous soft magnetic coatings on the surface of SmCo5 powders. Exchange coupling happened between the coated Co soft magnetic particles and the SmCo5 hard phase. As a result, SmCo5/Co nanocomposite powders with remanence of 73.58 emu/g and energy product of 13.74 MGOe were obtained in the optimum condition, as compared with those of 70.52 emu/g and 13.40 MGOe for uncoated SmCo5 powders. The effects of Co adding amount on Co particle size, coating morphology, and magnetic properties of SmCo5/Co products were investigated.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China under Grant No. 51422106; the National Basic Research Program of China under Grant No. 2014CB643702; the Ningbo Natural Science Foundation of China under Grant No. 2016A610249; the Scientific and Technological Project of Zhejiang Province under Grant No. 2013TD08; the Ningbo City Scientific and Technological Project under Grant No. 2012B81001; and the China Postdoctoral Science Foundation under Grant No. 2016M601989 for financial support.

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Author notes

  1. Lin Lv and Feng-Qing Wang have contributed equally to this work.

Authors and Affiliations

  1. CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China

    Lin Lv, Feng-Qing Wang, Juan Du & Ping Cui

  2. School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, 315211, China

    Qiang Zheng

  3. Department of Physics, University of Texas at Arlington, Arlington, TX, 76019, USA

    J. Ping Liu

  4. University of Chinese Academy of Sciences, Beijing, 100049, China

    Lin Lv, Juan Du, Xian-Lin Dong & Ping Cui

  5. Shanghai Institute of Ceramics, CAS, Shanghai, 200050, China

    Lin Lv & Xian-Lin Dong

  6. School of Physical Science and Technology, Shanghai Tech University, Shanghai, 201210, China

    Lin Lv

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  1. Lin Lv
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Correspondence to Juan Du.

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Lv, L., Wang, FQ., Zheng, Q. et al. Preparation and Magnetic Properties of Anisotropic SmCo5/Co Composite Particles. Acta Metall. Sin. (Engl. Lett.) 31, 143–147 (2018). https://doi.org/10.1007/s40195-017-0631-2

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  • DOI: https://doi.org/10.1007/s40195-017-0631-2

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