Development of MnBi permanent magnet: Neutron diffraction of MnBi powder

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4867230· OSTI ID:1157601

Cui, J. ^[1]; Choi, J. P. ^[1]; Li, G. ^[1]; Polikarpov, E. ^[1]; Darsell, J. ^[1]; Kramer, M. J. ^[2]; Zarkevich, N. A. ^[2]; Wang, L. L. ^[2]; Johnson, D. D. ^[2]; Marinescu, M. ^[3]; Huang, Q. Z. ^[4]; Wu, H. ^[5]; Vuong, N. V. ^[6]; Liu, J. P. ^[6]

---

1. Pacific Northwest National Laboratory
2. Ames Laboratory
3. Electron Energy Corportation
4. National Institute of Standarads and Technology
5. National Institute of Standards and Technology
6. University of Texas

MnBi attracts great attention in recent years for its great potential as permanent magnet materials. MnBi phase is difficult to obtain because of the rather drastic peritectic reaction between Mn and Bi. In this paper, we report our effort on synthesizing high purity MnBi compound using conventional powder metallurgical approaches. Neutron diffraction was carried out to investigate the crystal and nuclear structure of the obtained powder. The result shows that the purity of the obtained powder is about 91 wt. % at 300 K, and the magnetic moment of the Mn atom in MnBi lattice is 4.424 and 4.013 μ_B at 50 K and 300 K, respectively.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC02-07CH11358
• OSTI ID: 1157601
• Report Number(s): IS-J 8315; JAPIAU
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Powders
Neutron diffraction
Permanent magnets
magnetization measurement
Neutrons