Magnetic properties of MnBi based alloys: First-principles calculations for MnBi-Co and MnBi-Co-Fe cases
作者： Yang-Ki Hong , Jihoon Park , Oleg N. Mryasov , Seong-Gon Kim , Sungho Kim
DOI: 10.1063/1.4809564
关键词:
摘要: First-principles calculations of fundamental magnetic properties were performed for ordered MnBi, MnBi-Co, and MnBi-Co-Fe alloys to evaluate maximum energy product (BH)max. Full potential linear-augmented plane wave (FLAPW) linear-muffin-tin-orbital (LMTO) using density functional theory (DFT) within the local spin approximation (LSDA) used found give a reasonable description saturation magnetization (Ms), effective anisotropy constant (Keff), Curie temperature (Tc) NiAs-structured MnBi crystal. We that upon addition Co, Ms Keff increased, while Tc reduced. The changed from weak easy strong axis MnBi-Co MnBi-Co-Fe.
scitation.org
harvard.edu
osti.gov
doaj.org
aip.org参考文章(19)
O. N. Mryasov, R. F. Sabiryanov, A. J. Freeman, S. S. Jaswal, Effect of lattice distortions on the competition between the double and superexchange mechanisms inLaMnO3 Physical Review B. ,vol. 56, pp. 7255- 7261 ,(1997) , 10.1103/PHYSREVB.56.7255
S Sugimoto, Current status and recent topics of rare-earth permanent magnets Journal of Physics D. ,vol. 44, pp. 064001- ,(2011) , 10.1088/0022-3727/44/6/064001
Oleg N. Mryasov, Magnetic interactions in 3d-5d layered ferromagnets Journal of Magnetism and Magnetic Materials. ,vol. 272, pp. 800- 801 ,(2004) , 10.1016/J.JMMM.2003.11.285
J Köhler, J Kübler, None, Calculated magneto-optical properties of pure and doped MnBi Journal of Physics: Condensed Matter. ,vol. 8, pp. 8681- 8694 ,(1996) , 10.1088/0953-8984/8/44/017
Tu Chen, W. Stutius, The phase transformation and physical properties of the MnBi and Mn<inf>1.08</inf>Bi compounds IEEE Transactions on Magnetics. ,vol. 10, pp. 581- 586 ,(1974) , 10.1109/TMAG.1974.1058367
O. N. Mryasov, A. J. Freeman, A. I. Liechtenstein, Theory of non‐Heisenberg exchange: Results for localized and itinerant magnets Journal of Applied Physics. ,vol. 79, pp. 4805- 4807 ,(1996) , 10.1063/1.361678
M. Methfessel, Elastic constants and phonon frequencies of Si calculated by a fast full-potential linear-muffin-tin-orbital method Physical Review B. ,vol. 38, pp. 1537- 1540 ,(1988) , 10.1103/PHYSREVB.38.1537
Prabhakar R. Bandaru, Timothy D. Sands, Yukiko Kubota, Ernesto E. Marinero, Decoupling the structural and magnetic phase transformations in magneto- optic MnBi thin films by the partial substitution of Cr for Mn Applied Physics Letters. ,vol. 72, pp. 2337- 2339 ,(1998) , 10.1063/1.121355
J. B. Yang, W. B. Yelon, W. J. James, Q. Cai, S. Roy, N. Ali, Structure and magnetic properties of the MnBi low temperature phase Journal of Applied Physics. ,vol. 91, pp. 7866- 7868 ,(2002) , 10.1063/1.1451306
V Heine, A. I Liechtenstein, O. N Mryasov, On the Origin of Short-Range Order above Tc in Fe, Co, Ni EPL. ,vol. 12, pp. 545- 550 ,(1990) , 10.1209/0295-5075/12/6/013