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Crystallization kinetics and magnetization behavior of RE3.5Fe66.5Co10B20 (RE = Pr, Nd) nanocomposite ribbons

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Abstract

The influence of hard magnetic phase on the crystallization kinetics and magnetization behavior in nanocomposite RE3.5Fe66.5Co10B20 (RE = Pr, Nd) ribbons prepared by melt-spinning was studied. Differential scanning calorimeter (DSC) measurement of the as-cast melt-spun amorphous ribbons during the crystallization process shows that precipitation energy of Pr2Fe14B phase is higher than that for Nd2Fe14B phase, confirmed by X-ray diffraction (XRD) patterns. It can be explained by the different radii of Pr and Nd atoms. Scanning electron microscopy (SEM) images indicate that the average grain size in Pr3.5Fe66.5Co10B20 ribbon is smaller than that in Nd3.5Fe66.5Co10B20, resulting in an enhancement of exchange coupling between hard and soft phases. It is responsible for the better hard magnetic properties in Pr3.5Fe66.5Co10B20. In addition, the process of magnetization reversal of nanocomposite RE3.5Fe66.5Co10B20 (RE = Pr, Nd) ribbons was discussed in detail by the recoil loops.

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Acknowledgments

This work was financially supported by the Project of Zhejiang Province Innovative Research Team (No. 2010R50016), the Provincial Natural Science Foundation (No. LQ12E01006), and the National natural Science Foundation of China (No. 51301158).

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Authors and Affiliations

  1. Magnetism Key Laboratory of Zhejiang Province, College of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, China

    Qiong Wu, Peng-Yue Zhang, Min-Xiang Pan, Dong-Yun Li & Hong-Liang Ge

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  1. Qiong Wu
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  2. Peng-Yue Zhang
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Correspondence to Peng-Yue Zhang.

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Wu, Q., Zhang, PY., Pan, MX. et al. Crystallization kinetics and magnetization behavior of RE3.5Fe66.5Co10B20 (RE = Pr, Nd) nanocomposite ribbons. Rare Met. 33, 681–685 (2014). https://doi.org/10.1007/s12598-013-0136-8

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