Development of MnBi permanent magnet: Neutron diffraction of MnBi powder

Autor:	J. P. Liu, Evgueni Polikarpov, Jens T. Darsell, Matthew J. Kramer, Duane D. Johnson, M. Marinescu, Qingzhen Huang, Lin-Lin Wang, N. V. Vuong, Nikolai A. Zarkevich, Hui Wu, Jun Cui, Jung-Pyung Choi, Guosheng Li
Rok vydání:	2014
Předmět:	Crystal Materials science Condensed matter physics Magnetic structure Magnetic moment Magnet Neutron diffraction Intermetallic General Physics and Astronomy Magnetic nanoparticles Neutron
Zdroj:	Journal of Applied Physics. 115:17A743
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.4867230
Popis:	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 μB at 50 K and 300 K, respectively.
Databáze:	OpenAIRE
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