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Browse Journals & Magazines > Applied Physics Letters ...> Volume:97 Issue:11 Help

Size-dependent reversal of grains in perpendicular magnetic recording media measured by small-angle polarized neutron scattering

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11 Author(s)
Lister, S.J. ; SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews, Fife KY16 9SS, United Kingdom ; Thomson, T. ; Kohlbrecher, J. ; Takano, K.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3486680 

Polarized small-angle neutron scattering has been used to measure the magnetic structure of a CoCrPt–SiOx thin-film data storage layer, contained within a writable perpendicular recording media, at granular (<10 nm) length scales. The magnetic contribution to the scattering is measured as the magnetization is reversed by an external field, providing unique spatial information on the switching process. A simple model of noninteracting nanomagnetic grains provides a good description of the data and an analysis of the grain-size dependent reversal provides strong evidence for an increase in magnetic anisotropy with grain diameter.

Published in:
Applied Physics Letters  (Volume:97 ,  Issue: 11 )

Date of Publication: Sep 2010

Page(s):
112503 - 112503-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3486680
Product Type:
Journals & Magazines
Date of Current Version :
16 September 2010
Issue Date :
Sep 2010

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