Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe3Ge1
Abstract
Here, we show using both experimental and theoretical methods that cobalt substitution in the hexagonal ferromagnet Fe3Ge suppresses the planar magnetic anisotropy and favors a uniaxial state. Uniaxial ferromagnetism is observed at room temperature for cobalt concentrations of only a few percent, and 10% substitution fully suppresses the planar magnetic structure at least down to 5 K, with only a small effect on the magnetization and Curie temperature. First principles calculations predict strong uniaxial magnetocrystalline anisotropy and promising permanent magnet properties for higher cobalt concentrations. Finally, although these high Co concentrations were not realized experimentally, this work suggests that the rare-earth-free Fe3Ge structure supports intrinsic magnetic properties that may enable promising permanent magnet performance.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1482435
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Mcguire, Michael, Kavungal Veedu, Shanavas, Kesler, Michael S., and Parker, David S. Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe3Ge1. United States: N. p., 2018.
Web. doi:10.1038/s41598-018-32577-x.
Mcguire, Michael, Kavungal Veedu, Shanavas, Kesler, Michael S., & Parker, David S. Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe3Ge1. United States. https://doi.org/10.1038/s41598-018-32577-x
Mcguire, Michael, Kavungal Veedu, Shanavas, Kesler, Michael S., and Parker, David S. Fri .
"Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe3Ge1". United States. https://doi.org/10.1038/s41598-018-32577-x. https://www.osti.gov/servlets/purl/1482435.
@article{osti_1482435,
title = {Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe3Ge1},
author = {Mcguire, Michael and Kavungal Veedu, Shanavas and Kesler, Michael S. and Parker, David S.},
abstractNote = {Here, we show using both experimental and theoretical methods that cobalt substitution in the hexagonal ferromagnet Fe3Ge suppresses the planar magnetic anisotropy and favors a uniaxial state. Uniaxial ferromagnetism is observed at room temperature for cobalt concentrations of only a few percent, and 10% substitution fully suppresses the planar magnetic structure at least down to 5 K, with only a small effect on the magnetization and Curie temperature. First principles calculations predict strong uniaxial magnetocrystalline anisotropy and promising permanent magnet properties for higher cobalt concentrations. Finally, although these high Co concentrations were not realized experimentally, this work suggests that the rare-earth-free Fe3Ge structure supports intrinsic magnetic properties that may enable promising permanent magnet performance.},
doi = {10.1038/s41598-018-32577-x},
journal = {Scientific Reports},
number = 1,
volume = 8,
place = {United States},
year = {2018},
month = {9}
}
Works referenced in this record:
Permanent magnets: Plugging the gap
journal, September 2012
- Coey, J. M. D.
- Scripta Materialia, Vol. 67, Issue 6
Magnetic and X-Ray Studies of Iron-Germanium System II. Phase Diagram and Magnetism of Each Phase
journal, February 1965
- Kanematsu, Kazuo; Ohoyama, Tetuo
- Journal of the Physical Society of Japan, Vol. 20, Issue 2
Magnetic properties of hexagonal and cubic Fe 3 Ge
journal, November 1976
- Drijver, J. W.; Sinnema, S. G.; Woude, F. van der
- Journal of Physics F: Metal Physics, Vol. 6, Issue 11
Hard Magnetic Materials: A Perspective
journal, December 2011
- Coey, J. M. D.
- IEEE Transactions on Magnetics, Vol. 47, Issue 12
Electronic and magnetic properties of Si substituted Fe 3 Ge
journal, September 2015
- Shanavas, K. V.; McGuire, Michael A.; Parker, David S.
- Journal of Applied Physics, Vol. 118, Issue 12
Ferromagnetism of Fe3Sn and Alloys
journal, November 2014
- Sales, Brian C.; Saparov, Bayrammurad; McGuire, Michael A.
- Scientific Reports, Vol. 4, Issue 1
Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP
journal, August 2016
- Lamichhane, Tej N.; Taufour, Valentin; Masters, Morgan W.
- Applied Physics Letters, Vol. 109, Issue 9
Magnetic anisotropy — How much is enough for a permanent magnet?
journal, February 2016
- Skomski, R.; Coey, J. M. D.
- Scripta Materialia, Vol. 112
Magnetic Properties and Phase Transition of Fe 3 Ge
journal, June 1963
- Kanematsu, Kazuo; Yasukōchi, Kō; Ohoyama, Tetuo
- Journal of the Physical Society of Japan, Vol. 18, Issue 6
Magnetic order and interactions in ferrimagnetic
journal, May 2017
- May, Andrew F.; Liu, Yaohua; Calder, Stuart
- Physical Review B, Vol. 95, Issue 17
Magnetization and X-Ray Studies on (Fe 1- x Ni x ) 3 Ge and (Fe 1- x Ni x ) 3.4 Ge
journal, July 1984
- Kanematsu, Kazuo; Takahashi, Hiroshi
- Journal of the Physical Society of Japan, Vol. 53, Issue 7
Magnetocrystalline anisotropy of Fe3Ge single crystal: Effect of pressure and Mn substitution for Fe
journal, August 2004
- Albertini, F.; Negri, D.; Pareti, L.
- Journal of Applied Physics, Vol. 96, Issue 4
Magnetism and magnetic materials: by J.M.D. Coey, Cambridge, Cambridge University Press, 2018, 617 pp., £59.99 (paperback), ISBN 9781108717519. Scope: review. Level: advanced undergraduate, postgraduate, early career researcher, researcher.
journal, October 2019
- Howard, Eric
- Contemporary Physics, Vol. 60, Issue 4
Magnetism and Magnetic Materials
journal, October 1959
- Sucksmith, W.
- Physics Bulletin, Vol. 10, Issue 10
Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP
text, January 2016
- Lamichhane, Tej N.; Taufour, Valentin; Masters, Morgan W.
- arXiv
Works referencing / citing this record:
Reorientation of antiferromagnetism in cobalt doped FeSn
journal, November 2019
- Meier, William R.; Yan, Jiaqiang; McGuire, Michael A.
- Physical Review B, Vol. 100, Issue 18