Sub-nanosecond electromagnetic-micromagnetic dynamic simulations using the finite-difference time-domain method

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Sub-nanosecond electromagnetic-micromagnetic dynamic simulations using the finite-difference time-domain method

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dc.contributor.author Aziz, Mustafa M. en_US
dc.date.accessioned 2012-05-23T09:57:57Z en_US
dc.date.accessioned 2013-03-20T12:18:16Z
dc.date.issued 2009 en_US
dc.description.abstract This paper presents an efficient and simple approach of implementing the Landau-Lifshitz-Gilbert (LLG) equation of magnetisation motion within the Finite-difference Time-domain (FDTD) method. This combined electromagnetic-micromagnetic simulation technique is particularly important for modeling electromagnetic interaction with lossy magnetic material in the presence of current and magnetic sources, particularly at very high frequencies. The efficient implementation involves simple two-point spatial interpolations that are applicable to two and three-dimensional FDTD grids, and uses a stable iterative algorithm for the time integration of the LLG equation. A ferromagnetic resonance numerical experiment on a rectangular Permalloy prism excited through its cross-section by a non-uniform pulse field from a transmission line was carried out for the purpose of verifying the combined FDTD-LLG computations. The numerical results were in good agreement with linearised analytical solutions of the LLG equation for uniform and non-uniform precession modes. This paper also presents a brief investigation on the use of non-staggered FDTD grid schemes to model magnetic material using the LLG equation, and indicates that the classical FDTD staggered scheme offers simplicity in implementation and more accuracy for modeling wave interaction with lossy magnetic material than the non-staggered schemes based on Maxwell’s equations formulation. en_GB
dc.identifier.citation Vol. 15, pp. 1 - 29 en_GB
dc.identifier.doi 10.2528/PIERB09042304 en_US
dc.identifier.uri http://hdl.handle.net/10036/3537 en_US
dc.language.iso en en_GB
dc.relation.url http://www.jpier.org/pierb/pier.php?paper=09042304 en_GB
dc.relation.url http://dx.doi.org/10.2528/PIERB09042304 en_GB
dc.title Sub-nanosecond electromagnetic-micromagnetic dynamic simulations using the finite-difference time-domain method en_GB
dc.type Article en_GB
dc.date.available 2012-05-23T09:57:57Z en_US
dc.date.available 2013-03-20T12:18:16Z
dc.contributor.editor Kong, JA en_US
dc.identifier.issn 1937-6472 en_US
exeter.contacts.depositing-owner-email Aziz, Mustafa <M.M.Aziz@exeter.ac.uk> en_US
exeter.contacts.owner-email Aziz, Mustafa <M.M.Aziz@exeter.ac.uk> en_US
dc.identifier.journal Progress in Electromagnetics Research (PIER) B en_GB
pubs.organisational-data /Symplectic Joint Venture en_US
pubs.organisational-data /Symplectic Joint Venture/Exeter en_US
pubs.organisational-data /Symplectic Joint Venture/Exeter/All Exeter Users en_US
pubs.organisational-data /Symplectic Joint Venture/Exeter/College of Engineering, Mathematics & Physical Sciences en_US
pubs.organisational-data /Symplectic Joint Venture/Exeter/College of Engineering, Mathematics & Physical Sciences/All Academic Staff (CEMPS) en_US
pubs.organisational-data /Symplectic Joint Venture/Exeter/College of Engineering, Mathematics & Physical Sciences/All Researchers (R+T&R) (CEMPS) en_US
pubs.organisational-data /Symplectic Joint Venture/Exeter/College of Engineering, Mathematics & Physical Sciences/Engineering en_US


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