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In-plane anisotropy of coercive field in permalloy square ring arrays

In-plane anisotropy of coercive field in permalloy square ring arrays
In-plane anisotropy of coercive field in permalloy square ring arrays
Magnetic ring arrays are promising candidates for application in magnetic random access memory devices. The magnetic reversal processes and anisotropy of the coercivity in arrays of square-shaped nanorings with different spacings were investigated by vector magneto-optical Kerr effect magnetometry, magnetic force microscopy, and micromagnetic simulations. Two-step magnetization reversal demonstrates fourfold symmetry in the film plane resulting from the shape anisotropy in rings. Our numerical simulations show good agreement with the experiment.
0021-8979
08Q508 -[3pp]
Goncharov, A.V.
c1a847e7-1bfe-4517-bc2a-f70b65df613b
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
Metlushko, V.V.
ab23ba1e-f493-4e59-a671-e9dbcf4d8b74
Bordignon, G.
a3f8fb2d-ef28-481a-a0fe-b427aff314a9
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Karapetrov, G.
aadd9be9-46ff-470a-a04e-5e3f6391f5e7
Ilic, B.
04d0e6a5-ff41-4fb4-b769-d09f06f487b3
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Goncharov, A.V.
c1a847e7-1bfe-4517-bc2a-f70b65df613b
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
Metlushko, V.V.
ab23ba1e-f493-4e59-a671-e9dbcf4d8b74
Bordignon, G.
a3f8fb2d-ef28-481a-a0fe-b427aff314a9
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Karapetrov, G.
aadd9be9-46ff-470a-a04e-5e3f6391f5e7
Ilic, B.
04d0e6a5-ff41-4fb4-b769-d09f06f487b3
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d

Goncharov, A.V., Zhukov, A.A., Metlushko, V.V., Bordignon, G., Fangohr, H., Karapetrov, G., Ilic, B. and de Groot, P.A.J. (2006) In-plane anisotropy of coercive field in permalloy square ring arrays. Journal of Applied Physics, 99 (8), 08Q508 -[3pp]. (doi:10.1063/1.2171949).

Record type: Article

Abstract

Magnetic ring arrays are promising candidates for application in magnetic random access memory devices. The magnetic reversal processes and anisotropy of the coercivity in arrays of square-shaped nanorings with different spacings were investigated by vector magneto-optical Kerr effect magnetometry, magnetic force microscopy, and micromagnetic simulations. Two-step magnetization reversal demonstrates fourfold symmetry in the film plane resulting from the shape anisotropy in rings. Our numerical simulations show good agreement with the experiment.

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Published date: November 2006
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Identifiers

Local EPrints ID: 57281
URI: http://eprints.soton.ac.uk/id/eprint/57281
DOI: doi:10.1063/1.2171949
ISSN: 0021-8979
PURE UUID: 8c8e1da5-44b3-45f6-beb3-70d2b9cbbc7a
ORCID for H. Fangohr: ORCID iD orcid.org/0000-0001-5494-7193

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Date deposited: 13 Aug 2008
Last modified: 16 Mar 2024 03:09

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Contributors

Author: A.V. Goncharov
Author: A.A. Zhukov
Author: V.V. Metlushko
Author: G. Bordignon
Author: H. Fangohr ORCID iD
Author: G. Karapetrov
Author: B. Ilic
Author: P.A.J. de Groot

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