Magnetic excitations and anomalous spin-wave broadening in multiferroic FeV2O4
dc.contributor.author | Zhang, Qiang | |
dc.contributor.author | Lograsso, Thomas | |
dc.contributor.author | Ramazanoglu, Mehmet | |
dc.contributor.author | Chi, Songxue | |
dc.contributor.author | Liu, Yong | |
dc.contributor.author | Lograsso, Thomas | |
dc.contributor.author | Vaknin, David | |
dc.contributor.department | Ames National Laboratory | |
dc.date | 2018-02-16T10:59:39.000 | |
dc.date.accessioned | 2020-06-29T23:26:18Z | |
dc.date.available | 2020-06-29T23:26:18Z | |
dc.date.copyright | Wed Jan 01 00:00:00 UTC 2014 | |
dc.date.issued | 2014-06-01 | |
dc.description.abstract | <p>We report on the different roles of two orbital-active Fe2+ at the A site and V3+ at the B site in the magnetic excitations and on the anomalous spin-wave broadening in FeV2O4. FeV2O4 exhibits three structural transitions and successive paramagnetic (PM)–collinear ferrimagnetic (CFI)–noncollinear ferrimagnetic (NCFI)/ferroelectric transitions. The high-temperature tetragonal/PM–orthorhombic/CFI transition is accompanied by the appearance of a large energy gap in the magnetic excitations due to strong spin-orbit-coupling-induced anisotropy at the Fe2+ site. While there is no measurable increase in the energy gap from the orbital ordering of V3+ at the orthorhombic/CFI–tetragonal/NCFI transition, anomalous spin-wave broadening is observed in the orthorhombic/CFI state due to V3+ spin fluctuations at the B site. The spin-wave broadening is also observed at the zone boundary without softening in the NCFI/ferroelectric phase, which is discussed in terms of magnon-phonon coupling. Our study also indicates that the Fe2+ spins without the frustration at the A site may not play an important role in inducing ferroelectricity in the tetragonal/NCFI phase of FeV2O4.</p> | |
dc.description.comments | <p>This article is from <em>Physical Review B</em> 89 (2014): 224416, doi:<a href="http://dx.doi.org/10.1103/PhysRevB.89.224416" target="_blank">10.1103/PhysRevB.89.224416</a>. Posted with permission.</p> | |
dc.format.mimetype | application/pdf | |
dc.identifier | archive/lib.dr.iastate.edu/ameslab_pubs/259/ | |
dc.identifier.articleid | 1261 | |
dc.identifier.contextkey | 7168431 | |
dc.identifier.s3bucket | isulib-bepress-aws-west | |
dc.identifier.submissionpath | ameslab_pubs/259 | |
dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/7811 | |
dc.language.iso | en | |
dc.source.bitstream | archive/lib.dr.iastate.edu/ameslab_pubs/259/2014_Zhang_MagneticExcitations.pdf|||Fri Jan 14 22:59:45 UTC 2022 | |
dc.source.uri | 10.1103/PhysRevB.89.224416 | |
dc.subject.disciplines | Condensed Matter Physics | |
dc.subject.disciplines | Engineering Physics | |
dc.subject.disciplines | Metallurgy | |
dc.subject.keywords | Physics and Astronomy | |
dc.subject.keywords | Materials Science and Engineering | |
dc.title | Magnetic excitations and anomalous spin-wave broadening in multiferroic FeV2O4 | |
dc.type | article | |
dc.type.genre | article | |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | 316ee29f-99a9-49bc-a048-0f43caf97aa5 | |
relation.isOrgUnitOfPublication | 25913818-6714-4be5-89a6-f70c8facdf7e |
File
Original bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- 2014_Zhang_MagneticExcitations.pdf
- Size:
- 666.23 KB
- Format:
- Adobe Portable Document Format
- Description: