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Depth-Dependent Magnetization Profiles of Hybrid Exchange Springs

Nguyen, T. N. Anh; Knut, R.; Fallahi, V.; Chung, S.; Le, Q. Tuan; Mohseni, S. M.; Karis, O.; Peredkov, Sergey LU ; Dumas, R. K. and Miller, Casey W., et al. (2014) In Physical Review Applied 2(4).
Abstract
We report on the magnetization depth profile of a hybrid exchange-spring system in which a Co/Pd multilayer with perpendicular anisotropy is coupled to a CoFeB thin film with in-plane anisotropy. The competition between these two orthogonal anisotropies promotes a strong depth dependence of the magnetization orientation. The angle of the magnetization vector is sensitive both to the strength of the individual anisotropies and to the local exchange constant and is thus tunable by changing the thickness of the CoFeB layer and by substituting Ni for Pd in one layer of the Co/Pd stack. The resulting magnetic depth profiles are directly probed by element-specific x-ray magnetic circular dichroism of the Fe and Ni layers located at different... (More)
We report on the magnetization depth profile of a hybrid exchange-spring system in which a Co/Pd multilayer with perpendicular anisotropy is coupled to a CoFeB thin film with in-plane anisotropy. The competition between these two orthogonal anisotropies promotes a strong depth dependence of the magnetization orientation. The angle of the magnetization vector is sensitive both to the strength of the individual anisotropies and to the local exchange constant and is thus tunable by changing the thickness of the CoFeB layer and by substituting Ni for Pd in one layer of the Co/Pd stack. The resulting magnetic depth profiles are directly probed by element-specific x-ray magnetic circular dichroism of the Fe and Ni layers located at different average depths. The experimental results are corroborated by micromagnetic simulations. (Less)
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Physical Review Applied
volume
2
issue
4
publisher
American Physical Society
external identifiers
  • wos:000344342600001
  • scopus:84924364210
ISSN
2331-7019
DOI
10.1103/PhysRevApplied.2.044014
language
English
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yes
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3be78a6f-1b88-4062-acac-d728aff87211 (old id 4876121)
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2014-12-23 09:21:58
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2017-07-02 03:50:34
@article{3be78a6f-1b88-4062-acac-d728aff87211,
  abstract     = {We report on the magnetization depth profile of a hybrid exchange-spring system in which a Co/Pd multilayer with perpendicular anisotropy is coupled to a CoFeB thin film with in-plane anisotropy. The competition between these two orthogonal anisotropies promotes a strong depth dependence of the magnetization orientation. The angle of the magnetization vector is sensitive both to the strength of the individual anisotropies and to the local exchange constant and is thus tunable by changing the thickness of the CoFeB layer and by substituting Ni for Pd in one layer of the Co/Pd stack. The resulting magnetic depth profiles are directly probed by element-specific x-ray magnetic circular dichroism of the Fe and Ni layers located at different average depths. The experimental results are corroborated by micromagnetic simulations.},
  articleno    = {044014},
  author       = {Nguyen, T. N. Anh and Knut, R. and Fallahi, V. and Chung, S. and Le, Q. Tuan and Mohseni, S. M. and Karis, O. and Peredkov, Sergey and Dumas, R. K. and Miller, Casey W. and Akerman, J.},
  issn         = {2331-7019},
  language     = {eng},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review Applied},
  title        = {Depth-Dependent Magnetization Profiles of Hybrid Exchange Springs},
  url          = {http://dx.doi.org/10.1103/PhysRevApplied.2.044014},
  volume       = {2},
  year         = {2014},
}