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Numerical studies of demagnetizing effects in triangular ring arrays

Numerical studies of demagnetizing effects in triangular ring arrays
Numerical studies of demagnetizing effects in triangular ring arrays
We study the effect of the magnetostatic field in a two-dimensional periodic square array of Permalloy triangular rings by means of micromagnetic simulations. The rings have a lateral size of 50 nm, an edge width of 8 nm and the thickness is 10 nm. Applying an external field to one of the elements and assuming the rest of the array to be in the remanent state, we show how the
remanent magnetization and coercive field are affected by the magnetostatic field of the array, both as a function of the distance between the elements and as a function of the number of elements used to model the periodic array. We provide an estimate of the minimum distance for an independent behavior of the elements, and we show that a model with the first and second nearest neighbors of an element can accurately approximate the effect of a much larger array.
micromagnetic triangular rings, demagnetising effects
0021-8979
07D932-[3pp]
Bordignon, Giuliano
eb3e7975-60d5-401e-9227-5c1bd7d0fcc3
Fischbacher, Thomas
d3282f31-0a6a-4d19-80d0-e3bebc12f67a
Franchin, Matteo
d71ee912-9dcc-421b-a55d-9818454cafff
Zimmermann, Jurgen P.
5fe86abe-e58a-4ea5-9d39-fb5becdbae8f
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Bordignon, Giuliano
eb3e7975-60d5-401e-9227-5c1bd7d0fcc3
Fischbacher, Thomas
d3282f31-0a6a-4d19-80d0-e3bebc12f67a
Franchin, Matteo
d71ee912-9dcc-421b-a55d-9818454cafff
Zimmermann, Jurgen P.
5fe86abe-e58a-4ea5-9d39-fb5becdbae8f
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160

Bordignon, Giuliano, Fischbacher, Thomas, Franchin, Matteo, Zimmermann, Jurgen P., de Groot, P.A.J. and Fangohr, Hans (2008) Numerical studies of demagnetizing effects in triangular ring arrays. Journal of Applied Physics, 103 (7), 07D932-[3pp]. (doi:10.1063/1.2837029).

Record type: Article

Abstract

We study the effect of the magnetostatic field in a two-dimensional periodic square array of Permalloy triangular rings by means of micromagnetic simulations. The rings have a lateral size of 50 nm, an edge width of 8 nm and the thickness is 10 nm. Applying an external field to one of the elements and assuming the rest of the array to be in the remanent state, we show how the
remanent magnetization and coercive field are affected by the magnetostatic field of the array, both as a function of the distance between the elements and as a function of the number of elements used to model the periodic array. We provide an estimate of the minimum distance for an independent behavior of the elements, and we show that a model with the first and second nearest neighbors of an element can accurately approximate the effect of a much larger array.

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Published date: 1 April 2008
Keywords: micromagnetic triangular rings, demagnetising effects

Identifiers

Local EPrints ID: 50995
URI: https://eprints.soton.ac.uk/id/eprint/50995
ISSN: 0021-8979
PURE UUID: 7a9cbfd2-057f-4718-a49e-d7080246313c

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Date deposited: 28 Apr 2008
Last modified: 25 Jul 2017 16:31

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Contributors

Author: Giuliano Bordignon
Author: Thomas Fischbacher
Author: Matteo Franchin
Author: Jurgen P. Zimmermann
Author: P.A.J. de Groot
Author: Hans Fangohr

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