FePt grain size limit and required switching field in the presence of surface anisotropy

Please use this identifier to cite or link to this item: https://doi.org/10.1109/TMAG.2011.2157665

Title:	FePt grain size limit and required switching field in the presence of surface anisotropy
Authors:	Goh, J.Q. Yuan, Z.-M. Shen, L. Zhou, T. Feng, Y.P.
Keywords:	Areal density superparamagnetism surface anisotropy switching field
Issue Date:	Oct-2011
Citation:	Goh, J.Q., Yuan, Z.-M., Shen, L., Zhou, T., Feng, Y.P. (2011-10). FePt grain size limit and required switching field in the presence of surface anisotropy. IEEE Transactions on Magnetics 47 (10) : 3809-3812. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2011.2157665
Abstract:	Surface anisotropy that opposes crystalline anisotropy can become significant for highly packed grains. In this paper, we present an estimation of FePt grain size limit in the presence of surface anisotropy. The estimated grain size is optimized for rectangular, circular and hexagonal grain, respectively. In this manner, the thermally stable granular media can be attained for high areal density magnetic recording system. Micromagnetic simulations are performed to predict the required switching field for FePt granular media in the presence of surface anisotropy. The results reveal possible engineering challenges faced in designing high density magnetic recording medium. © 2011 IEEE.
Source Title:	IEEE Transactions on Magnetics
URI:	http://scholarbank.nus.edu.sg/handle/10635/98717
ISSN:	00189464
DOI:	10.1109/TMAG.2011.2157665
Appears in Collections:	Staff Publications

There are no files associated with this item.

Check