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Effect of the Ga Content on the Magnetic Properties and Microstructure of the Nanocrystalline Ce-Fe-B Alloys

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Abstract

In this work, the Ce17Fe78-xB6Gax (x = 0~3) nanocrystalline alloys are prepared by the direct melt spinning method with the wheel speed of 18 m/s. The effect of Ga content on the hard magnetic properties and the crystal structure of Ce17Fe78-xB6Gax (x = 0~3) nanocrystalline alloys has been investigated. The results show that the Curie temperature (Tc) and the phase content hard magnetic Ce2Fe14B phase can be increased by adding appropriate amount of low melting point Ga element. The results of magnetic properties show that the enhanced magnetic properties are obtained for the alloy with x = 1: Hcj = 5.61 kOe, Br = 5.4 kG, Hk/Hcj = 0.49, and (BH)max = 5.1 MGOe. The magnetization reversal characteristics of the alloys are analyzed by the recoil loops and the δM-H curves; the sample with the Ga-doped shows a single hard magnetic behavior. The positive peak of δM-H curve of the sample (x = 1) is obviously sharper and the peak value is higher, indicating the strongest magnetic interaction between grains. The reasons of the enhanced magnetic properties for the Ce-Fe-B alloy by the Ga addition are analyzed depending on the microstructure.

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Funding

This research was supported by National Key Research and Development Project (No. 2019YFF0217205), the Key R&D Program of Zhejiang Province of China (Nos. 2021C01190, 2020C05013 and 2021C01191), and the Zhejiang Provincial Natural Science Foundation of China (Nos. LGC20E010004 and LY21A040006).

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Authors and Affiliations

  1. Magnetism Key Laboratory of Zhejiang Province, China Jiliang University, Hangzhou, 310018, China

    Weijia Zeng, Hangfu Yang, Qiong Wu, Minxiang Pan, Nengjun Yu & Hongliang Ge

  2. Qianjiang College, Hangzhou Normal University, Hangzhou, 310036, China

    Yong Gu

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  1. Weijia Zeng
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  2. Hangfu Yang
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  3. Qiong Wu
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  7. Hongliang Ge
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Correspondence to Qiong Wu or Yong Gu.

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Zeng, W., Yang, H., Wu, Q. et al. Effect of the Ga Content on the Magnetic Properties and Microstructure of the Nanocrystalline Ce-Fe-B Alloys. J Supercond Nov Magn 34, 1225–1229 (2021). https://doi.org/10.1007/s10948-021-05828-8

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  • DOI: https://doi.org/10.1007/s10948-021-05828-8

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