https://doi.org/10.1007/s100510170080
Dynamics of vertical Bloch lines in bubble garnets: Experiments and theory
1
CNRS - Université Paris-Sud, Laboratoire de Physique des Solides,
bâtiment 510, 91405 Orsay, France
2
CNRS - Université de Bretagne occidentale, Laboratoire de Magnétisme
de Bretagne, BP 809, 29285 Brest, France
Corresponding author: a thiav@lps.u-psud.fr
Received:
10
April
2001
Published online: 15 September 2001
The magnetization dynamics is studied on 3D micromagnetic structures and in the aperiodic time regime. Experiments are compared with various micromagnetic simulations. The model system chosen is a vertical Bloch line inside a bubble garnet epitaxial film. It is shown that the Slonczewski equations describe with remarkable accuracy the experimental phenomena, qualitatively and quantitatively. The damping constant derived from the adjustment of all data is distinctly higher than the value derived from ferromagnetic resonance. Models for this discrepancy are discussed.
PACS: 75.60.Ch – Domain walls and domain structure / 75.70.Kw – Domain structure (including magnetic bubbles) / 76.30.Kg – Rare-earth ions and impurities / 76.50.+g – Ferromagnetic resonance
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001
