Rotatable magnetic anisotropy in a Fe0.8Ga0.2 thin film with stripe domains: Dynamics versus statics - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2014

Rotatable magnetic anisotropy in a Fe0.8Ga0.2 thin film with stripe domains: Dynamics versus statics

S. Tacchi
  • Fonction : Auteur
S. Fin
  • Fonction : Auteur
G. Carlotti
  • Fonction : Auteur
G. Gubbiotti
  • Fonction : Auteur
M. Madami
  • Fonction : Auteur
Massimiliano Marangolo
D. Bisero
  • Fonction : Auteur
A. Rettori
  • Fonction : Auteur
M. G. Pini
  • Fonction : Auteur

Résumé

A comprehensive investigation of rotatable anisotropy in a Fe0.8Ga0.2 thin film with a stripe domain structure has been performed comparing static and dynamic measurements. The stripes' domain formation and their rotation under a transverse magnetic field have been imaged by magnetic force microscopy. The rotatable anisotropy field H-rot was determined by fitting the frequency evolution of the dipole-dominated magnetostatic spin-wave mode versus the in-plane orientation of the stripe domains, measured by Brillouin light scattering in the absence of any dc or ac magnetic field. We obtained H-rot approximate to 1.35 kOe, which is nearly ten times larger than the crystallographic in-plane anisotropy field. By applying a dc magnetic field along the stripes' axis, H-rot decreases, and eventually vanishes for saturated in-plane magnetization. At remanence, we established a quantitative relationship between static and dynamic properties, that is, the stripes' rotation angle and the in-plane angle dependence of spin-wave frequency.

Dates et versions

hal-01240503 , version 1 (09-12-2015)

Identifiants

Citer

S. Tacchi, S. Fin, G. Carlotti, G. Gubbiotti, M. Madami, et al.. Rotatable magnetic anisotropy in a Fe0.8Ga0.2 thin film with stripe domains: Dynamics versus statics. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 89 (2), pp.024411. ⟨10.1103/PhysRevB.89.024411⟩. ⟨hal-01240503⟩
42 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More