Processing of MnBi bulk magnets with enhanced energy product
Source abstract
Abstract
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 context
OpenAlex topics: Magnetic Properties of Alloys · Hydrogen Storage and Materials · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Texas at Arlington 1 Department of Physics, , Arlington, Texas 76019, USA
Iowa State University 2 Ames Laboratory of the U.S., Department of Energy, , Ames, Iowa 50011, USA
Funding
DOE · Army Research Office · Advanced Research Projects Agency - Energy
References (25)
Show source-provided references
1. Adv. Mater. · 2011 · 23 · 82110.1002/adma.201002180 ↗
2. JOM. · 2012 · 64 · 75210.1007/s11837-012-0351-z ↗
3. J. Phys. D: Appl. Phys. · 2013 · 46 · 04300110.1088/0022-3727/46/4/043001 ↗
4. J. Phys.: Condens. Matter · 2014 · 26 · 06421110.1088/0953-8984/26/6/064211 ↗
5. J. Appl. Phys. · 2012 · 111 · 07E31210.1063/1.3672086 ↗
6. J. Appl. Phys. · 2011 · 109 · 07A72210.1063/1.3561784 ↗
7. J. Phys. D: Appl. Phys. · 2013 · 46 · 26500110.1088/0022-3727/46/26/265001 ↗
8. J. Appl. Phys. · 1952 · 23 · 120710.1063/1.1702032 ↗
9. Phys. Rev. B · 1992 · 46 · 1457810.1103/PhysRevB.46.14578 ↗
10. J. Magn. Magn. Mater. · 2013 · 330 · 10610.1016/j.jmmm.2012.10.046 ↗
11. Metals · 2014 · 4 · 45510.3390/met4030455 ↗
12. Phys. Status Solidi B · 2015 · 252 · 193410.1002/pssb.201552075 ↗
13. J. Magn. Magn. Mater. · 2012 · 324 · 188710.1016/j.jmmm.2012.01.017 ↗
14. J. Phys. D: Appl. Phys. · 2013 · 46 · 06200110.1088/0022-3727/46/6/062001 ↗
15. Mater. Res. Express · 2014 · 1 · 03610810.1088/2053-1591/1/3/036108 ↗
16. IEEE Trans. Magn · 2014 · 50 · 2105506
17. J. Phys.: Condens. Matter · 2014 · 26 · 06421210.1088/0953-8984/26/6/064212 ↗
18. J. Appl. Phys. · 2005 · 97 · 10K30210.1063/1.1847058 ↗
19. Mater. Sci. Eng. A · 1991 · 133 · 24110.1016/0921-5093(91)90060-Z ↗
20. J. Appl. Phys. · 1991 · 69 · 606710.1063/1.347771 ↗
21. J. Appl. Phys. · 2014 · 115 · 17A74310.1063/1.4867230 ↗
22. Phys. Rev. B · 2011 · 83 · 02441510.1103/PhysRevB.83.024415 ↗
23. Chem. Mater. · 2015 · 27 · 467710.1021/acs.chemmater.5b01224 ↗
24. J. Magn. Magn. Mater. · 2007 · 310 · e88710.1016/j.jmmm.2006.11.040 ↗
25. J. Phys.: Condens. Matter. · 2002 · 14 · 650910.1088/0953-8984/14/25/318 ↗