Westmoreland, S. C., Evans, R. F.L. orcid.org/0000-0002-2378-8203, Hrkac, G. et al. (10 more authors) (2018) Multiscale model approaches to the design of advanced permanent magnets. Scripta Materialia. pp. 56-62. ISSN 1359-6462
Abstract
We describe the process of multiscale modelling of magnetic materials, based on atomistic models coupled parametrically to micromagnetic calculations. At the atomistic lengthscale we use Spin Dynamics (SD) to study switching mechanisms, using structures predicted by Molecular Dynamics. The process is completed using SD to calculate the cell size and temperature dependent parameters for micromagnetic calculations. We demonstrate an unusually strong cell size scaling for Nd2Fe14B, and demonstrate numerically the existence of atomic scale Barkhausen jumps during magnetization switching. Scaling of magnetic properties is shown to be important in micromagnetic calculations of hysteresis, especially considering variation in micromagnetic cell size.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. |
Keywords: | Atomistic,Micromagnetic,Multiscale,Permanent magnets,Pinning |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 20 Mar 2018 16:50 |
Last Modified: | 21 Oct 2024 23:54 |
Published Version: | https://doi.org/10.1016/j.scriptamat.2018.01.019 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.scriptamat.2018.01.019 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:128764 |