Processing of MnBi bulk magnets with enhanced energy product | Zendy

Narayan Poudyal | Zendy; Xubo Liu | Zendy; Wei Wang | Zendy; Nguyễn Văn Vượng | Zendy; Yilong Ma | Zendy; Kinjal Gandha | Zendy; Kevin Elkins | Zendy; J. Ping Liu | Zendy; Kewei Sun | Zendy; M. J. Kramer | Zendy; Jun Cui | Zendy

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Processing of MnBi bulk magnets with enhanced energy product

Author(s) -

Narayan Poudyal,

Xubo Liu,

Wei Wang,

Nguyễn Văn Vượng,

Yilong Ma,

Kinjal Gandha,

Kevin Elkins,

J. Ping Liu,

Kewei Sun,

M. J. Kramer,

Jun Cui

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4942955

Subject(s) - coercivity , magnet , materials science , microstructure , ball mill , compaction , grain size , nanoscopic scale , characterization (materials science) , nuclear magnetic resonance , composite material , metallurgy , condensed matter physics , nanotechnology , mechanical engineering , physics , engineering

We report magnetic properties and microstructure of high energy-product MnBi bulk magnets fabricated by low-temperature ball-milling and warm compaction technique. A maximum energy product (BH)max of 8.4 MGOe and a coercivity of 6.2 kOe were obtained in the bulk MnBi magnet at room temperature. Magnetic characterization at elevated temperatures showed an increase in coercivity to 16.2 kOe while (BH)max value decreased to 6.8 MGOe at 400 K. Microstructure characterization revealed that the bulk magnets consist of oriented uniform nanoscale grains with average size about 50 nm

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