Analysis of magnetoresistance in arrays of connected nano-rings
Analysis of magnetoresistance in arrays of connected nano-rings
We study the anisotropic magnetoresistance (AME) of a 2D periodic square array of connected permalloy rings with periodicity of 1m combining experimental and computational techniques. The computational models consists of two parts: 1) the computation of the magnetization and 2) the computation of the current density. For 1), we use standard micromagnetic methods. For 2), we start from a potential difference applied across the sample, compute the resulting electric potential , and subsequently the corresponding current density based on a uniform conductiviy. We take into account the backreaction of the magnetoresistive effects onto the current density by self-consistently computing the current density and conductivity until they converge. We compare the experimentally measured AMR insight into the characteristics of the AMR data. Finally, we demonstrate the importance of taking into account the spatial variation of the current density when computing the AMR.
2881-2883
Bordignon, G.
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Fischbacher, T.
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Franchin, M.
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Zimmermann, J.P.
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Zhukov, A.A.
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Metlushko, V.V.
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de Groot, P.A.J.
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Fangohr, H.
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August 2007
Bordignon, G.
a3f8fb2d-ef28-481a-a0fe-b427aff314a9
Fischbacher, T.
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Franchin, M.
d71ee912-9dcc-421b-a55d-9818454cafff
Zimmermann, J.P.
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Zhukov, A.A.
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Metlushko, V.V.
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de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Bordignon, G., Fischbacher, T., Franchin, M., Zimmermann, J.P., Zhukov, A.A., Metlushko, V.V., de Groot, P.A.J. and Fangohr, H.
(2007)
Analysis of magnetoresistance in arrays of connected nano-rings.
IEEE Transactions on Magnetics, 43 (6), .
(doi:10.1109/TMAG.2007.892597).
Abstract
We study the anisotropic magnetoresistance (AME) of a 2D periodic square array of connected permalloy rings with periodicity of 1m combining experimental and computational techniques. The computational models consists of two parts: 1) the computation of the magnetization and 2) the computation of the current density. For 1), we use standard micromagnetic methods. For 2), we start from a potential difference applied across the sample, compute the resulting electric potential , and subsequently the corresponding current density based on a uniform conductiviy. We take into account the backreaction of the magnetoresistive effects onto the current density by self-consistently computing the current density and conductivity until they converge. We compare the experimentally measured AMR insight into the characteristics of the AMR data. Finally, we demonstrate the importance of taking into account the spatial variation of the current density when computing the AMR.
Text
Bord_07.pdf
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Published date: August 2007
Identifiers
Local EPrints ID: 46710
URI: http://eprints.soton.ac.uk/id/eprint/46710
ISSN: 0018-9464
PURE UUID: 50a0b60d-ac9a-48b6-b79d-676c48e0be06
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Date deposited: 16 Jul 2007
Last modified: 16 Mar 2024 03:09
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Contributors
Author:
G. Bordignon
Author:
T. Fischbacher
Author:
M. Franchin
Author:
J.P. Zimmermann
Author:
A.A. Zhukov
Author:
V.V. Metlushko
Author:
P.A.J. de Groot
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