Thermodynamics of SmCo5 compound doped with Fe and Ni: An ab initio study

A. Landa; P. Söderlind; D. Parker; D. Åberg; V. Lordi; A. Perron; P. E.A. Turchi; R. K. Chouhan; D. Paudyal; T. A. Lograsso

doi:10.1016/j.jallcom.2018.06.264

Thermodynamics of SmCo₅ compound doped with Fe and Ni: An ab initio study

A. Landa, P. Söderlind, D. Parker, D. Åberg, V. Lordi, A. Perron, P. E.A. Turchi, R. K. Chouhan, D. Paudyal, T. A. Lograsso

Materials Theory

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

SmCo₅ permanent magnets exhibit enormous uniaxial magnetocrystalline anisotropy energy and have a high Curie temperature. However, their low energy product is a significant deficiency. To increase the energy product in SmCo₅, we propose substituting cobalt with iron, that has a much larger magnetic moment, in a SmCoNiFe₃ magnet where nickel is used as a thermodynamic stabilizer.

Original language	English
Pages (from-to)	659-663
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	765
DOIs	https://doi.org/10.1016/j.jallcom.2018.06.264
State	Published - Oct 15 2018

Funding

A. L. thanks A. Ruban, O. Peil, P. Korzhavyi, and L. Vitos for technical support. This research is supported by the Critical Materials Institute, an Energy Innovation Hub funded by the US Department of Energy , Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. Part of the work is performed under the auspices of the US Department of Energy by the Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344 and Oak Ridge National Laboratory under Contract No. DE-AC05-00OR22725 . Part of the work is performed at the Ames Laboratory, which is operated for the US Department of Energy by Iowa State University under contract DE-AC02-07CH11358 . A. L. thanks A. Ruban, O. Peil, P. Korzhavyi, and L. Vitos for technical support. This research is supported by the Critical Materials Institute, an Energy Innovation Hub funded by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. Part of the work is performed under the auspices of the US Department of Energy by the Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344 and Oak Ridge National Laboratory under Contract No. DE-AC05-00OR22725. Part of the work is performed at the Ames Laboratory, which is operated for the US Department of Energy by Iowa State University under contract DE-AC02-07CH11358.

Funders	Funder number
Critical Materials Institute
US Department of Energy
Advanced Manufacturing Office
Office of Energy Efficiency and Renewable Energy
Lawrence Livermore National Laboratory	DE-AC52-07NA27344
Oak Ridge National Laboratory	DE-AC05-00OR22725
Iowa State University	DE-AC02-07CH11358

Keywords

Anisotropy
Computer simulations
Enthalpy
Magnetization
Permanent magnets
Rare earth alloys and compounds

Access to Document

10.1016/j.jallcom.2018.06.264

Cite this

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title = "Thermodynamics of SmCo5 compound doped with Fe and Ni: An ab initio study",

abstract = "SmCo5 permanent magnets exhibit enormous uniaxial magnetocrystalline anisotropy energy and have a high Curie temperature. However, their low energy product is a significant deficiency. To increase the energy product in SmCo5, we propose substituting cobalt with iron, that has a much larger magnetic moment, in a SmCoNiFe3 magnet where nickel is used as a thermodynamic stabilizer.",

keywords = "Anisotropy, Computer simulations, Enthalpy, Magnetization, Permanent magnets, Rare earth alloys and compounds",

author = "A. Landa and P. S{\"o}derlind and D. Parker and D. {\AA}berg and V. Lordi and A. Perron and Turchi, {P. E.A.} and Chouhan, {R. K.} and D. Paudyal and Lograsso, {T. A.}",

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T1 - Thermodynamics of SmCo5 compound doped with Fe and Ni

T2 - An ab initio study

AU - Landa, A.

AU - Söderlind, P.

AU - Parker, D.

AU - Åberg, D.

AU - Lordi, V.

AU - Perron, A.

AU - Turchi, P. E.A.

AU - Chouhan, R. K.

AU - Paudyal, D.

AU - Lograsso, T. A.

PY - 2018/10/15

Y1 - 2018/10/15

N2 - SmCo5 permanent magnets exhibit enormous uniaxial magnetocrystalline anisotropy energy and have a high Curie temperature. However, their low energy product is a significant deficiency. To increase the energy product in SmCo5, we propose substituting cobalt with iron, that has a much larger magnetic moment, in a SmCoNiFe3 magnet where nickel is used as a thermodynamic stabilizer.

AB - SmCo5 permanent magnets exhibit enormous uniaxial magnetocrystalline anisotropy energy and have a high Curie temperature. However, their low energy product is a significant deficiency. To increase the energy product in SmCo5, we propose substituting cobalt with iron, that has a much larger magnetic moment, in a SmCoNiFe3 magnet where nickel is used as a thermodynamic stabilizer.

KW - Anisotropy

KW - Computer simulations

KW - Enthalpy

KW - Magnetization

KW - Permanent magnets

KW - Rare earth alloys and compounds

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