Micromagnetism of MnBi:FeCo thin films

T. H. Rana, P. Manchanda, B. Balamurugan, A. Kashyap, T. R. Gao, I. Takeuchi, J. Cun, S. Biswas, Renat F Sabirianov, David J Sellmyer, R. Skomski

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

MnBi:FeCo hard-soft bilayers are investigated using micromagnetic simulations with open boundary conditions and two-dimensional (2D) periodic boundary conditions (PBC). Open and PBC yield similar coercivities of about 1.01 T, in agreement with experiment, but the hysteresis-loop shape is very different in the two theoretical approaches. The difference is ascribed to edge effects, which occur in open boundary conditions but not in PBC and experiment. Near the nucleation field, a curling or vortex mode develops in dots with circular cross sections. The curling mode, which is caused by magnetostatic self-interaction, does not negatively affect the high coercivity of 1.01 T. The magnetostatic self-interaction contributes to the favorable second-quadrant behavior of the MnBi:FeCo thin films.

Original languageEnglish (US)
Article number075003
JournalJournal of Physics D: Applied Physics
Volume49
Issue number7
DOIs
StatePublished - Jan 28 2016

Fingerprint

Boundary conditions
boundary conditions
Thin films
thin films
Magnetostatics
magnetostatics
Coercive force
coercivity
quadrants
Hysteresis loops
Vortex flow
Nucleation
Experiments
hysteresis
interactions
nucleation
vortices
cross sections
simulation

Keywords

  • coercivity
  • exchanged coupled hard-soft bilayer
  • hysteresis loop
  • micromagnetic
  • periodic boundary condition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Rana, T. H., Manchanda, P., Balamurugan, B., Kashyap, A., Gao, T. R., Takeuchi, I., ... Skomski, R. (2016). Micromagnetism of MnBi:FeCo thin films. Journal of Physics D: Applied Physics, 49(7), [075003]. https://doi.org/10.1088/0022-3727/49/7/075003

Micromagnetism of MnBi:FeCo thin films. / Rana, T. H.; Manchanda, P.; Balamurugan, B.; Kashyap, A.; Gao, T. R.; Takeuchi, I.; Cun, J.; Biswas, S.; Sabirianov, Renat F; Sellmyer, David J; Skomski, R.

In: Journal of Physics D: Applied Physics, Vol. 49, No. 7, 075003, 28.01.2016.

Research output: Contribution to journalArticle

Rana, TH, Manchanda, P, Balamurugan, B, Kashyap, A, Gao, TR, Takeuchi, I, Cun, J, Biswas, S, Sabirianov, RF, Sellmyer, DJ & Skomski, R 2016, 'Micromagnetism of MnBi:FeCo thin films', Journal of Physics D: Applied Physics, vol. 49, no. 7, 075003. https://doi.org/10.1088/0022-3727/49/7/075003
Rana TH, Manchanda P, Balamurugan B, Kashyap A, Gao TR, Takeuchi I et al. Micromagnetism of MnBi:FeCo thin films. Journal of Physics D: Applied Physics. 2016 Jan 28;49(7). 075003. https://doi.org/10.1088/0022-3727/49/7/075003
Rana, T. H. ; Manchanda, P. ; Balamurugan, B. ; Kashyap, A. ; Gao, T. R. ; Takeuchi, I. ; Cun, J. ; Biswas, S. ; Sabirianov, Renat F ; Sellmyer, David J ; Skomski, R. / Micromagnetism of MnBi:FeCo thin films. In: Journal of Physics D: Applied Physics. 2016 ; Vol. 49, No. 7.
@article{7325c89468ce4abe96b29b7b69399a71,
title = "Micromagnetism of MnBi:FeCo thin films",
abstract = "MnBi:FeCo hard-soft bilayers are investigated using micromagnetic simulations with open boundary conditions and two-dimensional (2D) periodic boundary conditions (PBC). Open and PBC yield similar coercivities of about 1.01 T, in agreement with experiment, but the hysteresis-loop shape is very different in the two theoretical approaches. The difference is ascribed to edge effects, which occur in open boundary conditions but not in PBC and experiment. Near the nucleation field, a curling or vortex mode develops in dots with circular cross sections. The curling mode, which is caused by magnetostatic self-interaction, does not negatively affect the high coercivity of 1.01 T. The magnetostatic self-interaction contributes to the favorable second-quadrant behavior of the MnBi:FeCo thin films.",
keywords = "coercivity, exchanged coupled hard-soft bilayer, hysteresis loop, micromagnetic, periodic boundary condition",
author = "Rana, {T. H.} and P. Manchanda and B. Balamurugan and A. Kashyap and Gao, {T. R.} and I. Takeuchi and J. Cun and S. Biswas and Sabirianov, {Renat F} and Sellmyer, {David J} and R. Skomski",
year = "2016",
month = "1",
day = "28",
doi = "10.1088/0022-3727/49/7/075003",
language = "English (US)",
volume = "49",
journal = "Journal Physics D: Applied Physics",
issn = "0022-3727",
publisher = "IOP Publishing Ltd.",
number = "7",

}

TY - JOUR

T1 - Micromagnetism of MnBi:FeCo thin films

AU - Rana, T. H.

AU - Manchanda, P.

AU - Balamurugan, B.

AU - Kashyap, A.

AU - Gao, T. R.

AU - Takeuchi, I.

AU - Cun, J.

AU - Biswas, S.

AU - Sabirianov, Renat F

AU - Sellmyer, David J

AU - Skomski, R.

PY - 2016/1/28

Y1 - 2016/1/28

N2 - MnBi:FeCo hard-soft bilayers are investigated using micromagnetic simulations with open boundary conditions and two-dimensional (2D) periodic boundary conditions (PBC). Open and PBC yield similar coercivities of about 1.01 T, in agreement with experiment, but the hysteresis-loop shape is very different in the two theoretical approaches. The difference is ascribed to edge effects, which occur in open boundary conditions but not in PBC and experiment. Near the nucleation field, a curling or vortex mode develops in dots with circular cross sections. The curling mode, which is caused by magnetostatic self-interaction, does not negatively affect the high coercivity of 1.01 T. The magnetostatic self-interaction contributes to the favorable second-quadrant behavior of the MnBi:FeCo thin films.

AB - MnBi:FeCo hard-soft bilayers are investigated using micromagnetic simulations with open boundary conditions and two-dimensional (2D) periodic boundary conditions (PBC). Open and PBC yield similar coercivities of about 1.01 T, in agreement with experiment, but the hysteresis-loop shape is very different in the two theoretical approaches. The difference is ascribed to edge effects, which occur in open boundary conditions but not in PBC and experiment. Near the nucleation field, a curling or vortex mode develops in dots with circular cross sections. The curling mode, which is caused by magnetostatic self-interaction, does not negatively affect the high coercivity of 1.01 T. The magnetostatic self-interaction contributes to the favorable second-quadrant behavior of the MnBi:FeCo thin films.

KW - coercivity

KW - exchanged coupled hard-soft bilayer

KW - hysteresis loop

KW - micromagnetic

KW - periodic boundary condition

UR - http://www.scopus.com/inward/record.url?scp=84957595666&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84957595666&partnerID=8YFLogxK

U2 - 10.1088/0022-3727/49/7/075003

DO - 10.1088/0022-3727/49/7/075003

M3 - Article

AN - SCOPUS:84957595666

VL - 49

JO - Journal Physics D: Applied Physics

JF - Journal Physics D: Applied Physics

SN - 0022-3727

IS - 7

M1 - 075003

ER -