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Micromagnetic simulation of the magnetic exchange spring system DyFe2/YFe2

Micromagnetic simulation of the magnetic exchange spring system DyFe2/YFe2
Micromagnetic simulation of the magnetic exchange spring system DyFe2/YFe2
Magnetic measurements of [110] [50 A DyFe2/200 A YFe2] reveal a rich switching behaviour: the formation of exchange springs in this system of alternating hard and soft layers can be observed for low temperatures (LTs). For high temperatures (HTs), the appearance of the hysteresis loop changes significantly, implying a more complicated reversal process. In this article, we reproduce hysteresis loops for net and compound-specific magnetizations by means of micromagnetic simultions and assess the quality by a direct comparison to recent x-ray magnetic circular dichroism measurements. The HT switching characteristics, showing a magnetization reversal of the hard magnetic layer before the soft magnetic layer, are investigated and understood on the basis of detailed magnetic configuration plots. The crossover of LT to HT switching patterns is explained by energy considerations, and the dependence on different parameters is outlined.
0021-8979
1-3
Zimmermann, Jürgen P.
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Bordignon, Giuliano
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Boardman, Richard P.
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Fischbacher, Thomas
d3282f31-0a6a-4d19-80d0-e3bebc12f67a
Fangohr, Hans
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Martin, Kevin N.
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Bowden, Graham J.
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Zhukov, Alexander A.
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de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Zimmermann, Jürgen P.
9153a646-6cb4-40d7-99eb-9db4035e2b17
Bordignon, Giuliano
eb3e7975-60d5-401e-9227-5c1bd7d0fcc3
Boardman, Richard P.
5818d677-5732-4e8a-a342-7164dbb10df1
Fischbacher, Thomas
d3282f31-0a6a-4d19-80d0-e3bebc12f67a
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Martin, Kevin N.
5e478502-9b20-41e8-9fb7-62f1c3b66352
Bowden, Graham J.
f73a1c01-4d38-4170-bf30-9ebfa4283807
Zhukov, Alexander A.
75d64070-ea67-4984-ae75-4d5798cd3c61
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d

Zimmermann, Jürgen P., Bordignon, Giuliano, Boardman, Richard P., Fischbacher, Thomas, Fangohr, Hans, Martin, Kevin N., Bowden, Graham J., Zhukov, Alexander A. and de Groot, P.A.J. (2006) Micromagnetic simulation of the magnetic exchange spring system DyFe2/YFe2. Journal of Applied Physics, 99 (8), 1-3. (doi:10.1063/1.2172560).

Record type: Article

Abstract

Magnetic measurements of [110] [50 A DyFe2/200 A YFe2] reveal a rich switching behaviour: the formation of exchange springs in this system of alternating hard and soft layers can be observed for low temperatures (LTs). For high temperatures (HTs), the appearance of the hysteresis loop changes significantly, implying a more complicated reversal process. In this article, we reproduce hysteresis loops for net and compound-specific magnetizations by means of micromagnetic simultions and assess the quality by a direct comparison to recent x-ray magnetic circular dichroism measurements. The HT switching characteristics, showing a magnetization reversal of the hard magnetic layer before the soft magnetic layer, are investigated and understood on the basis of detailed magnetic configuration plots. The crossover of LT to HT switching patterns is explained by energy considerations, and the dependence on different parameters is outlined.

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Published date: 15 April 2006

Identifiers

Local EPrints ID: 42009
URI: https://eprints.soton.ac.uk/id/eprint/42009
ISSN: 0021-8979
PURE UUID: ea03bcb2-5a57-49ed-a8d3-69b42c33d2c7

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Date deposited: 30 Oct 2006
Last modified: 13 Mar 2019 21:13

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Contributors

Author: Jürgen P. Zimmermann
Author: Giuliano Bordignon
Author: Thomas Fischbacher
Author: Hans Fangohr
Author: Kevin N. Martin
Author: Graham J. Bowden
Author: Alexander A. Zhukov
Author: P.A.J. de Groot

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