Processing of MnBi bulk magnets with enhanced energy product

Poudyal, Narayan; Liu, Xubo; Wang, Wei; Nguyen, V. Vuong; Ma, Yilong; Gandha, Kinjal; Elkins, Kevin; Liu, J. Ping; Sun, Kewei; Kramer, M. J.; Cui, Jun

doi:10.1063/1.4942955

Title: Processing of MnBi bulk magnets with enhanced energy product

Journal Article · Sun May 01 00:00:00 EDT 2016 · AIP Advances

DOI:https://doi.org/10.1063/1.4942955· OSTI ID:1239162

Poudyal, Narayan;

; Wang, Wei; Nguyen, V. Vuong; Ma, Yilong; Gandha, Kinjal; Elkins, Kevin; Liu, J. Ping; Sun, Kewei; Kramer, M. J.; Cui, Jun

Here, 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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Research Organization:: Ames Lab., Ames, IA (United States)

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

Grant/Contract Number:: REACT 0472-1526; AC02-07CH11358; W911NF-11-1-0507

OSTI ID:: 1239162

Alternate ID(s):: OSTI ID: 1254300; OSTI ID: 1421063

Report Number(s):: IS-J-8991

Journal Information:: AIP Advances, Journal Name: AIP Advances Vol. 6 Journal Issue: 5; ISSN 2158-3226

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 37 works

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References (24)

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