Large energy product enhancement in perpendicularly coupled MnBi/CoFe magnetic bilayers

T. R. Gao; L. Fang; S. Fackler; S. Maruyama; X. H. Zhang; L. L. Wang; T. Rana; P. Manchanda; A. Kashyap; K. Janicka; A. L. Wysocki; A. T. N'Diaye; E. Arenholz; J. A. Borchers; B. J. Kirby; B. B. Maranville; K. W. Sun; M. J. Kramer; V. P. Antropov; D. D. Johnson; R. Skomski; J. Cui; I. Takeuchi

doi:10.1103/PhysRevB.94.060411

Large energy product enhancement in perpendicularly coupled MnBi/CoFe magnetic bilayers

T. R. Gao, L. Fang, S. Fackler, S. Maruyama, X. H. Zhang, L. L. Wang, T. Rana, P. Manchanda, A. Kashyap, K. Janicka, A. L. Wysocki, A. T. N'Diaye, E. Arenholz, J. A. Borchers, B. J. Kirby, B. B. Maranville, K. W. Sun, M. J. Kramer, V. P. Antropov, D. D. JohnsonR. Skomski, J. Cui, I. Takeuchi

研究成果: Article › 査読

8 被引用数 (Scopus)

抄録

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.

本文言語	English
論文番号	060411
ジャーナル	Physical Review B
巻	94
号	6
DOI	https://doi.org/10.1103/PhysRevB.94.060411
出版ステータス	Published - 2016 8 29
外部発表	はい

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

文献へのアクセス

10.1103/PhysRevB.94.060411

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引用スタイル

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., ... Takeuchi, I. (2016). Large energy product enhancement in perpendicularly coupled MnBi/CoFe magnetic bilayers. Physical Review B, 94(6), [060411]. https://doi.org/10.1103/PhysRevB.94.060411

Large energy product enhancement in perpendicularly coupled MnBi/CoFe magnetic bilayers. / 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.; Takeuchi, I.

In: Physical Review B, Vol. 94, No. 6, 060411, 29.08.2016.

研究成果: Article › 査読

Gao, TR, Fang, L, Fackler, S, Maruyama, S, Zhang, XH, Wang, LL, Rana, T, Manchanda, P, Kashyap, A, Janicka, K, Wysocki, AL, N'Diaye, AT, Arenholz, E, Borchers, JA, Kirby, BJ, Maranville, BB, Sun, KW, Kramer, MJ, Antropov, VP, Johnson, DD, Skomski, R, Cui, J & Takeuchi, I 2016, 'Large energy product enhancement in perpendicularly coupled MnBi/CoFe magnetic bilayers', Physical Review B, vol. 94, no. 6, 060411. https://doi.org/10.1103/PhysRevB.94.060411

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. ; Takeuchi, I. / Large energy product enhancement in perpendicularly coupled MnBi/CoFe magnetic bilayers. In: Physical Review B. 2016 ; Vol. 94, No. 6.

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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.",

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