Effect of stacking faults on the magnetocrystalline anisotropy of hcp Co: A first-principles study

C. J. Aas, L. Szunyogh, R. F L Evans, R. W. Chantrell

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In terms of the fully relativistic screened Korringa-Kohn-Rostoker method we investigate the effect of stacking faults on the magnetic properties of hexagonal close-packed (hcp) cobalt. In particular, we consider the formation energy and the effect on the magnetocrystalline anisotropy energy (MAE) of four different stacking faults in hcp cobalt - an intrinsic growth fault, an intrinsic deformation fault, an extrinsic fault and a twin-like fault. We find that the intrinsic growth fault has the lowest formation energy, in good agreement with previous first-principles calculations. With the exception of the intrinsic deformation fault which has a positive impact on the MAE, we find that the presence of a stacking fault generally reduces the MAE of bulk Co. Finally, we consider a pair of intrinsic growth faults and find that their effect on the MAE is not additive, but synergic.

Original languageEnglish
Article number296006
JournalJournal of Physics Condensed Matter
Volume25
Issue number29
DOIs
Publication statusPublished - Jul 24 2013

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Magnetocrystalline anisotropy
Anisotropy
Stacking faults
crystal defects
anisotropy
energy of formation
Cobalt
cobalt
Growth
energy
Magnetic properties
magnetic properties

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)
  • Medicine(all)

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Effect of stacking faults on the magnetocrystalline anisotropy of hcp Co : A first-principles study. / Aas, C. J.; Szunyogh, L.; Evans, R. F L; Chantrell, R. W.

In: Journal of Physics Condensed Matter, Vol. 25, No. 29, 296006, 24.07.2013.

Research output: Contribution to journalArticle

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