Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe3Ge1

Mcguire, Michael; Kavungal Veedu, Shanavas; Kesler, Michael S.; Parker, David S.

doi:10.1038/s41598-018-32577-x

Title: 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:

^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: 2018-09-21

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.

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                    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

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                    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.

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@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}

}

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Works referenced in this record:

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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
DOI: 10.1103/physrevb.100.184421

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Title: Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe3Ge1

Abstract

Citation Formats

Permanent magnets: Plugging the gap journal, September 2012

Magnetic and X-Ray Studies of Iron-Germanium System II. Phase Diagram and Magnetism of Each Phase journal, February 1965

Magnetic properties of hexagonal and cubic Fe 3 Ge journal, November 1976

Hard Magnetic Materials: A Perspective journal, December 2011

Electronic and magnetic properties of Si substituted Fe 3 Ge journal, September 2015

Ferromagnetism of Fe3Sn and Alloys journal, November 2014

Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP journal, August 2016

Magnetic anisotropy — How much is enough for a permanent magnet? journal, February 2016

Magnetic Properties and Phase Transition of Fe 3 Ge journal, June 1963

Magnetic order and interactions in ferrimagnetic Mn 3 Si 2 Te 6 journal, May 2017

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

Magnetocrystalline anisotropy of Fe3Ge single crystal: Effect of pressure and Mn substitution for Fe journal, August 2004

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

Magnetism and Magnetic Materials journal, October 1959

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Reorientation of antiferromagnetism in cobalt doped FeSn journal, November 2019

Title: Tuning magnetocrystalline anisotropy by cobalt alloying in hexagonal Fe₃Ge₁

Permanent magnets: Plugging the gap
journal, September 2012

Magnetic and X-Ray Studies of Iron-Germanium System II. Phase Diagram and Magnetism of Each Phase
journal, February 1965

Magnetic properties of hexagonal and cubic Fe ₃ Ge
journal, November 1976

Hard Magnetic Materials: A Perspective
journal, December 2011

Electronic and magnetic properties of Si substituted Fe ₃ Ge
journal, September 2015

Ferromagnetism of Fe3Sn and Alloys
journal, November 2014

Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP
journal, August 2016

Magnetic anisotropy — How much is enough for a permanent magnet?
journal, February 2016

Magnetic Properties and Phase Transition of Fe ₃ Ge
journal, June 1963

Magnetic order and interactions in ferrimagnetic ${Mn}_{3} {Si}_{2} {Te}_{6}$
journal, May 2017

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

Magnetocrystalline anisotropy of Fe3Ge single crystal: Effect of pressure and Mn substitution for Fe
journal, August 2004

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

Magnetism and Magnetic Materials
journal, October 1959

Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP
text, January 2016

Reorientation of antiferromagnetism in cobalt doped FeSn
journal, November 2019