Please use this identifier to cite or link to this item:
|Title:||Reversal mechanism in permanent magnetic materials|
|Authors:||Zhao, G.P. |
|Citation:||Zhao, G.P., Lim, H.S., Feng, Y.P., Ong, C.K., Liu, G.R. (2002-02-01). Reversal mechanism in permanent magnetic materials. Journal of Applied Physics 91 (3) : 2186-2191. ScholarBank@NUS Repository. https://doi.org/10.1063/1.1428791|
|Abstract:||The phenomenon of magnetization reversal in a hard magnet is studied analytically within a framework of a simplified energy minimization model for a two grain system. The transition region (a domain wall-like moment structure) is found to play a crucial role in nucleating a reversed domain and in the subsequent formation of a domain wall near the grain boundary. This is shown to result in a considerable reduction in coercivity. Temperature effects are taken into account by considering thermally activated jumps over energy barriers that hinder the motion of the transition region. We found that thermal fluctuations at room temperature can substantially reduce coercivity provided the grains are sufficiently small. © 2002 American Institute of Physics.|
|Source Title:||Journal of Applied Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 17, 2018
WEB OF SCIENCETM
checked on Jun 20, 2018
checked on May 19, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.