Anisotropy of W in Fe and Co

A. Kashyap, P. Manchanda, P. K. Sahota, Ralph Skomski, Jeff E. Shield, D. J. Sellmyer

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The magnetization and magnetic anisotropy of iron-rich Fe-W and W-Co intermetallics and nanostructures are investigated by first-principle calculations. The W atom is antiferromagnetically coupled to nearest neighbor Co atom and interface Fe atom in the case of Fe-W multilayers. The first anisotropy constants are positive, nearly zero, or negative, depending on the atomic structures. Typical anisotropy energies per atom are -0.513 meV for a dilute W-Co alloy, -0.06 meV for W2Fe2, and 0.44 meV for W2Fe4 (0.1 meV/atom∼1 MJ/m3). These values are of interest for permanent-magnet applications but also indicate the need for careful structural control and for a more detailed investigation of structure-property relationships in Fe-W nanostructures.

Original languageEnglish (US)
Article number6027698
Pages (from-to)3336-3339
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
StatePublished - Oct 1 2011

Fingerprint

Anisotropy
Atoms
Nanostructures
Magnetic anisotropy
Permanent magnets
Intermetallics
Magnetization
Multilayers
Iron

Keywords

  • Anisotropy
  • transition-metal alloys

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Kashyap, A., Manchanda, P., Sahota, P. K., Skomski, R., Shield, J. E., & Sellmyer, D. J. (2011). Anisotropy of W in Fe and Co. IEEE Transactions on Magnetics, 47(10), 3336-3339. [6027698]. https://doi.org/10.1109/TMAG.2011.2157317

Anisotropy of W in Fe and Co. / Kashyap, A.; Manchanda, P.; Sahota, P. K.; Skomski, Ralph; Shield, Jeff E.; Sellmyer, D. J.

In: IEEE Transactions on Magnetics, Vol. 47, No. 10, 6027698, 01.10.2011, p. 3336-3339.

Research output: Contribution to journalArticle

Kashyap, A, Manchanda, P, Sahota, PK, Skomski, R, Shield, JE & Sellmyer, DJ 2011, 'Anisotropy of W in Fe and Co', IEEE Transactions on Magnetics, vol. 47, no. 10, 6027698, pp. 3336-3339. https://doi.org/10.1109/TMAG.2011.2157317
Kashyap A, Manchanda P, Sahota PK, Skomski R, Shield JE, Sellmyer DJ. Anisotropy of W in Fe and Co. IEEE Transactions on Magnetics. 2011 Oct 1;47(10):3336-3339. 6027698. https://doi.org/10.1109/TMAG.2011.2157317
Kashyap, A. ; Manchanda, P. ; Sahota, P. K. ; Skomski, Ralph ; Shield, Jeff E. ; Sellmyer, D. J. / Anisotropy of W in Fe and Co. In: IEEE Transactions on Magnetics. 2011 ; Vol. 47, No. 10. pp. 3336-3339.
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