Anomalous magneto-structural behavior of MnBi explained: A path towards an improved permanent magnet
| dc.contributor.author | Johnson, Duane | |
| dc.contributor.author | Wang, Linlin | |
| dc.contributor.author | Zarkevich, Nikolai | |
| dc.contributor.department | Ames National Laboratory | |
| dc.contributor.department | Department of Materials Science and Engineering | |
| dc.date | 2018-02-15T16:29:02.000 | |
| dc.date.accessioned | 2020-06-29T23:26:10Z | |
| dc.date.available | 2020-06-29T23:26:10Z | |
| dc.date.copyright | Wed Jan 01 00:00:00 UTC 2014 | |
| dc.date.embargo | 2014-12-15 | |
| dc.date.issued | 2014-01-01 | |
| dc.description.abstract | <p>Low-temperature MnBi (hexagonal NiAs phase) exhibits anomalies in the lattice constants (a, c) and bulk elastic modulus (B) below 100 K, spin reorientation and magnetic susceptibilitymaximum near 90 K, and, importantly for high-temperature magnetic applications, an increasingcoercivity (unique to MnBi) above 180 K. We calculate the total energy and magneto-anisotropyenergy (MAE) versus (a, c) using DFT+U methods. We reproduce and explain all the above anomalies. We predict that coercivity and MAE increase due to increasing a, suggesting means to improve MnBi permanent magnets.</p> | |
| dc.description.comments | <p>This article is from <em>APL Materials</em> 2 (2013): 032103, doi:<a href="http://dx.doi.org/10.1063/1.4867223" target="_blank">10.1063/1.4867223</a>.</p> | |
| dc.format.mimetype | application/pdf | |
| dc.identifier | archive/lib.dr.iastate.edu/ameslab_pubs/241/ | |
| dc.identifier.articleid | 1243 | |
| dc.identifier.contextkey | 6465197 | |
| dc.identifier.s3bucket | isulib-bepress-aws-west | |
| dc.identifier.submissionpath | ameslab_pubs/241 | |
| dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/7792 | |
| dc.language.iso | en | |
| dc.source.bitstream | archive/lib.dr.iastate.edu/ameslab_pubs/241/2014_Zarkevich_AnomalousMagneto.pdf|||Fri Jan 14 22:52:41 UTC 2022 | |
| dc.source.uri | 10.1063/1.4867223 | |
| dc.subject.disciplines | Engineering Physics | |
| dc.subject.disciplines | Materials Science and Engineering | |
| dc.subject.keywords | Materials Science and Engineering | |
| dc.subject.keywords | Thermal expansion | |
| dc.subject.keywords | Coercive force | |
| dc.subject.keywords | Lattice constants | |
| dc.subject.keywords | Doping | |
| dc.subject.keywords | Density functional theory | |
| dc.title | Anomalous magneto-structural behavior of MnBi explained: A path towards an improved permanent magnet | |
| dc.type | article | |
| dc.type.genre | article | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | ed24845f-863f-4613-9f76-130602a21b4a | |
| relation.isAuthorOfPublication | 6b6c6b4d-92db-4692-8879-fbf39f63a4ac | |
| relation.isOrgUnitOfPublication | 25913818-6714-4be5-89a6-f70c8facdf7e | |
| relation.isOrgUnitOfPublication | bf9f7e3e-25bd-44d3-b49c-ed98372dee5e |
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