Please use this identifier to cite or link to this item:
Title: Study of magnetization reversal of Co/Pd bit-patterned media by micro-magnetic simulation
Authors: Li, W.M. 
Yang, Y. 
Chen, Y.J.
Huang, T.L.
Shi, J.Z.
Ding, J. 
Keywords: Bit-patterned media
Dipolar interactions
Magnetization reversal
Switching field distribution (SFD)
Issue Date: Apr-2012
Citation: Li, W.M., Yang, Y., Chen, Y.J., Huang, T.L., Shi, J.Z., Ding, J. (2012-04). Study of magnetization reversal of Co/Pd bit-patterned media by micro-magnetic simulation. Journal of Magnetism and Magnetic Materials 324 (8) : 1575-1580. ScholarBank@NUS Repository.
Abstract: Bit-patterned media based on a single-bit-per-island may be a promising candidate for perpendicular magnetic recording at the Tb/in 2 level because they could provide a lower noise and higher density. The understanding of magnetization reversal processes in such patterned media is important. In this work, the range of single domain island size based on Co/Pd bit-patterned media was determined. Demagnetization effect, dipolar interactions and switching field distribution (SFD) for bit-patterned media were quantitatively studied by the simulation based on Landau-Lifshitz-Gilbert equation. The total hysteresis loops and SFD were comparable with the experiment ones. The SFD increased from 2σ=1.2 kOe (as the calculated intrinsic SFD) to the experimental value of 1.9 kOe due to dipolar interactions which is in a good agreement with the experimental results (2.0 kOe). Optimized patterned structure with a minimized SFD and maximized data storage densities was found to have an island size of 10 nm and islands separation of 20 nm. The calculated ratio of SFD/H c (H c: the coercivity) is 9.2%, which is below the threshold of 10% for 1 Tb/in 2 pattern media. © 2011 Elsevier B.V. All rights reserved.
Source Title: Journal of Magnetism and Magnetic Materials
ISSN: 03048853
DOI: 10.1016/j.jmmm.2011.12.006
Appears in Collections:Staff Publications

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


checked on Jun 17, 2021


checked on Jun 17, 2021

Page view(s)

checked on Jun 21, 2021

Google ScholarTM



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