Campus Units
Materials Science and Engineering, Ames Laboratory
Document Type
Article
Publication Version
Published Version
Publication Date
8-1-2016
Journal or Book Title
Physical Review B
Volume
94
Issue
6
First Page
060411(R)
DOI
10.1103/PhysRevB.94.060411
Abstract
We demonstrate substantial enhancement in the energy product of MnBi-based magnets by forming robust ferromagnetic exchange coupling between a MnBi layer and a thin CoFe layer in a unique perpendicular coupling configuration, which provides increased resistance to magnetization reversal. The measured nominal energy product of 172kJ/m3 at room temperature is the largest value experimentally attained for permanent magnets free of expensive raw materials. Our finding shows that exchange-coupled MnBi/CoFe magnets are a viable option for pursuing rare-earth-free magnets with energy products approaching those containing rare-earth elements.
Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
File Format
application/pdf
Recommended Citation
Gao, T. R.; Fang, L.; Fackler, S.; Maruyama, S.; Zhang, X. H.; Wang, L. L.; Rana, T.; Manchanda, P.; Kashyap, A.; Janicka, K.; Wysocki, A. L.; N'Diaye, A. T.; Arenholz, E.; Borchers, J. A.; Kirby, B. J.; Maranville, B. B.; Sun, K. W.; Kramer, M. J.; Antropov, V. P.; Johnson, D. D.; Skomski, R.; Cui, J.; and Takeuchi, I., "Large energy product enhancement in perpendicularly coupled MnBi/CoFe magnetic bilayers" (2016). Ames Laboratory Publications. 395.
https://lib.dr.iastate.edu/ameslab_pubs/395
Comments
This article is from Physical Review B 94 (2016): 060411(R), https://doi.org/10.1103/PhysRevB.94.060411.