Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3562973
Title: Accurate calculation of the nucleation field and hysteresis loops in hard-soft multilayers
Authors: Zhao, G.P.
Deng, Y.
Zhang, H.W.
Cheng, Z.H.
Ding, J. 
Issue Date: 1-Apr-2011
Citation: Zhao, G.P., Deng, Y., Zhang, H.W., Cheng, Z.H., Ding, J. (2011-04-01). Accurate calculation of the nucleation field and hysteresis loops in hard-soft multilayers. Journal of Applied Physics 109 (7) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3562973
Abstract: In this paper, the nucleation field HN, hysteresis loops, and coercivity mechanism for hard/soft multilayers have been investigated within a self-contained micromagnetic model, which change with the strength of the interface exchange coupling Ji as well as the thickness of the hard and soft layers Lh and Ls. Analyses show that the nucleation field goes up as the interface exchange coupling increases. However, Ji has a significant effect on HN only when Ls is about 10 of the domain wall width of the soft phase while the thickness of the hard layer is larger than its domain wall width. The hysteresis loops of the Nd2Fe14B/-Fe/Nd2Fe14B trilayers for various Ji have been calculated. The calculated pinning field decreases when Ji increases. It is found that, as Ls increases, the coercivity mechanism changes from pinning to nucleation. The change of exchange coupling at the interface influences the soft layer thickness, at which the coercivity starts to deviate from pinning. The critical thickness of the soft phase, at which the behavior of the hysteresis loop changes from the single-phased one to the two-phased one, decreases as J i decreases, so that the rigid composite magnet appears only when Ls is very small for smaller Ji. © 2011 American Institute of Physics.
Source Title: Journal of Applied Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/86857
ISSN: 00218979
DOI: 10.1063/1.3562973
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

9
checked on Sep 19, 2018

WEB OF SCIENCETM
Citations

8
checked on Sep 5, 2018

Page view(s)

80
checked on Aug 24, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.