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Effects of Co Element on the Structure, Magnetic, and Microwave Absorption Properties of La-Fe-B Alloys

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Abstract

In order to understand the intrinsic properties of high abundance permanent magnet materials, effects of Co element on the structure, magnetic, and microwave absorption properties of La12.5(Fe1-xCox)81.3B6.2 alloys have been investigated with x = 0, 0.1, 0.2, 0.3. The X-ray diffraction results revealed that compounds of La12.5(Fe1-xCox)81.3B6.2 crystallized the Nd2Fe14B-type structure with the space group P42/mnm. The saturation magnetization of the powders increases with the Co content increasing, 97.7 emu/g for x = 0.3. The minimum absorption peak value of La12.5(Fe1-xCox)81.3B6.2 alloy reaches about − 18.69 dB at 10.56 GHz with the matching thickness of 2.5 mm.

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Funding

This work was financially supported by the National Natural Science Foundations of China (No. 51871066, No. 51761007, and No. 2016YFB0700901) and the Guangxi Natural Science Foundation (No. 2016GXNSFGA38001).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, People’s Republic of China

    Pengcheng Yang, Chuang Tian & Qingrong Yao

  2. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, People’s Republic of China

    Qingrong Yao

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  1. Pengcheng Yang
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  2. Chuang Tian
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Correspondence to Qingrong Yao.

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Yang, P., Tian, C. & Yao, Q. Effects of Co Element on the Structure, Magnetic, and Microwave Absorption Properties of La-Fe-B Alloys. J Supercond Nov Magn 33, 1125–1128 (2020). https://doi.org/10.1007/s10948-019-05323-1

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  • DOI: https://doi.org/10.1007/s10948-019-05323-1

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