From nucleation to coercivity

Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.2108120

Title:	From nucleation to coercivity
Authors:	Zhao, G.P. Zhao, M.G. Lim, H.S. Feng, Y.P. Ong, C.K.
Issue Date:	17-Oct-2005
Citation:	Zhao, G.P., Zhao, M.G., Lim, H.S., Feng, Y.P., Ong, C.K. (2005-10-17). From nucleation to coercivity. Applied Physics Letters 87 (16) : 1-3. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2108120
Abstract:	The demagnetization process of an exchange-coupled hard/soft/hard magnetic system and its coercivity mechanism are investigated within a micromagnetic framework. The calculation reveals that the demagnetization is a three-step process: (i) it begins with the nucleation of a transition region, (ii) the subsequent evolution of the domain wall near the interface, and (iii) the irreversible domain-wall motion from the soft phase into hard phase. As the thickness of the soft interlayer decreases, the dominant mechanism of coercivity switches from pinning to nucleation. However, for very thin interlayer, the three-step process occurs at the same applied field. © 2005 American Institute of Physics.
Source Title:	Applied Physics Letters
URI:	http://scholarbank.nus.edu.sg/handle/10635/96679
ISSN:	00036951
DOI:	10.1063/1.2108120
Appears in Collections:	Staff Publications

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