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Proposal of a micromagnetic standard problem for ferromagnetic resonance simulations

Proposal of a micromagnetic standard problem for ferromagnetic resonance simulations
Proposal of a micromagnetic standard problem for ferromagnetic resonance simulations
Nowadays, micromagnetic simulations are a common tool for studying a wide range of different magnetic phenomena, including the ferromagnetic resonance. A technique for evaluating reliability and validity of different micromagnetic simulation tools is the simulation of proposed standard problems. We propose a new standard problem by providing a detailed specification and analysis of a sufficiently simple problem. By analyzing the magnetization dynamics in a thin permalloy square sample, triggered by a well defined excitation, we obtain the ferromagnetic resonance spectrum and identify the resonance modes via Fourier transform. Simulations are performed using both finite difference and finite element numerical methods, with OOMMF and Nmag simulators, respectively. We report the effects of initial conditions and simulation parameters on the character of the observed resonance modes for this standard problem. We provide detailed instructions and code to assist in using the results for evaluation of new simulator tools, and to help with numerical calculation of ferromagnetic resonance spectra and modes in general.
0304-8853
428-439
Baker, Alexander
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Beg, Marijan
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Ashton, Gregory
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Albert, Maximilian
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Chernyshenko, Dmitri
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Wang, Weiwei
42981e5f-b7ee-44f7-a64d-d47ab0cacbce
Zhang, Shiley
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Bisotti, Marc-Antonio
be2d7abd-afdc-4d18-a2e9-a633d73a67b9
Franchin, Matteo
d71ee912-9dcc-421b-a55d-9818454cafff
Hu, Chun Lian
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Stamps, Robert
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Hesjedal, Thorsten
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Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Baker, Alexander
9645170c-6733-4949-8e2a-0d682afd5269
Beg, Marijan
499a2633-2ab7-4ec3-ab2a-c6eae1874f83
Ashton, Gregory
805bcbfd-ae8a-46b2-8297-f3142c3d0e7e
Albert, Maximilian
a8049610-1e98-4cfb-b59a-177645a42b47
Chernyshenko, Dmitri
62dad926-c42a-43db-9312-2cacbd53a042
Wang, Weiwei
42981e5f-b7ee-44f7-a64d-d47ab0cacbce
Zhang, Shiley
ff9b3454-4624-4475-b4d6-7f70852b0a0d
Bisotti, Marc-Antonio
be2d7abd-afdc-4d18-a2e9-a633d73a67b9
Franchin, Matteo
d71ee912-9dcc-421b-a55d-9818454cafff
Hu, Chun Lian
24873c9f-2823-4750-8f6c-a9771e047ed5
Stamps, Robert
796f5f65-cf05-4247-b58d-714ae97abd36
Hesjedal, Thorsten
a9d5adba-ba79-489e-a704-772b35659734
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160

Baker, Alexander, Beg, Marijan, Ashton, Gregory, Albert, Maximilian, Chernyshenko, Dmitri, Wang, Weiwei, Zhang, Shiley, Bisotti, Marc-Antonio, Franchin, Matteo, Hu, Chun Lian, Stamps, Robert, Hesjedal, Thorsten and Fangohr, Hans (2017) Proposal of a micromagnetic standard problem for ferromagnetic resonance simulations. Journal of Magnetism and Magnetic Materials, 421, 428-439. (doi:10.1016/j.jmmm.2016.08.009).

Record type: Article

Abstract

Nowadays, micromagnetic simulations are a common tool for studying a wide range of different magnetic phenomena, including the ferromagnetic resonance. A technique for evaluating reliability and validity of different micromagnetic simulation tools is the simulation of proposed standard problems. We propose a new standard problem by providing a detailed specification and analysis of a sufficiently simple problem. By analyzing the magnetization dynamics in a thin permalloy square sample, triggered by a well defined excitation, we obtain the ferromagnetic resonance spectrum and identify the resonance modes via Fourier transform. Simulations are performed using both finite difference and finite element numerical methods, with OOMMF and Nmag simulators, respectively. We report the effects of initial conditions and simulation parameters on the character of the observed resonance modes for this standard problem. We provide detailed instructions and code to assist in using the results for evaluation of new simulator tools, and to help with numerical calculation of ferromagnetic resonance spectra and modes in general.

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1603.05419 v1 Fangohr.pdf - Accepted Manuscript
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Accepted/In Press date: 2 August 2016
e-pub ahead of print date: 3 August 2016
Published date: 1 January 2017
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 401703
URI: https://eprints.soton.ac.uk/id/eprint/401703
ISSN: 0304-8853
PURE UUID: 94dae81b-1703-4d2b-a6cd-376e2a234384

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Date deposited: 19 Oct 2016 14:31
Last modified: 30 Nov 2018 05:02

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Contributors

Author: Alexander Baker
Author: Marijan Beg
Author: Gregory Ashton
Author: Maximilian Albert
Author: Dmitri Chernyshenko
Author: Weiwei Wang
Author: Shiley Zhang
Author: Marc-Antonio Bisotti
Author: Matteo Franchin
Author: Chun Lian Hu
Author: Robert Stamps
Author: Thorsten Hesjedal
Author: Hans Fangohr

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