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:22273961

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

---

1. Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354 (United States)
2. Materials Sciences and Engineering Division, Ames Laboratory, Ames, Iowa 50011 (United States)
3. Electron Energy Corporation, Landisville, Pennsylvania 17538 (United States)
4. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102 (United States)
5. Department of Physics, University of Texas at Arlington, Arlington, Texas 76019 (United States)

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{sub B} at 50 K and 300 K, respectively.

• OSTI ID: 22273961
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH
CRYSTAL LATTICES
CRYSTALS
INTERMETALLIC COMPOUNDS
MAGNETIC MATERIALS
MAGNETIC MOMENTS
MANGANESE
NEUTRON DIFFRACTION
PERMANENT MAGNETS
POWDERS
TEMPERATURE DEPENDENCE