Fischbacher, J., Kovacs, A., Oezelt, H. et al. (14 more authors) (2017) On the limits of coercivity in permanent magnets. Applied Physics Letters. 072404. ISSN 0003-6951
Abstract
The maximum coercivity that can be achieved for a given hard magnetic alloy is estimated by computing the energy barrier for the nucleation of a reversed domain in an idealized microstructure without any structural defects and without any soft magnetic secondary phases. For Sm1-zZrz(Fe1-yCoy)12-xTix based alloys, which are considered an alternative to Nd2Fe14B magnets with a lower rare-earth content, the coercive field of a small magnetic cube is reduced to 60% of the anisotropy field at room temperature and to 50% of the anisotropy field at elevated temperature (473 K). This decrease of the coercive field is caused by misorientation, demagnetizing fields, and thermal fluctuations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 AIP Publishing. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 01 Oct 2018 13:20 |
Last Modified: | 16 Oct 2024 15:08 |
Published Version: | https://doi.org/10.1063/1.4999315 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1063/1.4999315 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:136462 |