Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 31, Issue 18, Pages 15608-15615Publisher
SPRINGER
DOI: 10.1007/s10854-020-04124-w
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Funding
- National Natural Science Foundation of China [51871173, 51701148]
- fund of the State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology [SKLAB02019003]
- Natural Science Foundation of Shaanxi [2020JQ-909, 2020JM-631, 2019217314GXRC009CG010-GXYD9.1]
- Scientific Research Program - Shaanxi Provincial Education Department [20JK0693]
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Long-range-ordered Fe3Al was prepared by a mechanical alloying and ordering transformation process. Different ball milling time in the mechanical alloying process induces various amounts of long-range-ordered DO3-type Fe3Al, leading to different magnetic properties. It was found that with the increase of ball milling time, the saturation magnetization values increased to 149 emu/g and then decreased to 96 emu/g. Interestingly, their electromagnetic wave absorption properties are also different. The complex permeability curves are characterized by multiple peaks, which is attributed to the natural resonance. In particular, Fe3Al powder obtained by a 30 h ball milling process is a promising candidate for thin electromagnetic wave absorber, with the minimum reflection loss of - 41.5 dB at the 12.1 GHz when the thickness is 1.5 mm, and the bandwidth below - 10 dB is 4.8 GHz.
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