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Article Dans Une Revue Applied Physics Letters Année : 1997

Reorientational magnetic transition in mesoscopic cobalt dots

Michel Hehn
K. Ounadjela
  • Fonction : Auteur
R. Ferré
  • Fonction : Auteur
W. Grange
  • Fonction : Auteur
F. Rousseaux
  • Fonction : Auteur

Résumé

We have measured magnetic anisotropy constants and domain structures in arrays of magnetic dots 0.5 μm wide fabricated out of an epitaxial (0001) hcp cobalt film. Occurrence of a concentric stripe domain pattern for which the magnetization is mostly in-plane with small alternately up and down perpendicular components is found for a 25-nm-thick cobalt dot array. Interestingly, this sample produces a spin reorientation from a quasi in-plane to a fully perpendicularly oriented magnetization when the temperature is lowered, due to an increase of the perpendicular anisotropy at low temperature.
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Dates et versions

hal-04370607 , version 1 (03-01-2024)

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Michel Hehn, K. Ounadjela, R. Ferré, W. Grange, F. Rousseaux. Reorientational magnetic transition in mesoscopic cobalt dots. Applied Physics Letters, 1997, 71 (19), pp.2833-2835. ⟨10.1063/1.119567⟩. ⟨hal-04370607⟩
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