Glasslike relaxation of labyrinthine domain patterns

Titelangaben

Reimann, Bert ; Richter, Reinhard ; Rehberg, Ingo:
Glasslike relaxation of labyrinthine domain patterns.
In: Physical Review E. Bd. 65 (2002) Heft 3 . - 031504.
ISSN 1550-2376
DOI: https://doi.org/10.1103/PhysRevE.65.031504

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Abstract

A spatial analysis of globally disordered (labyrinthine) stripe domain patterns in thin ferrimagnetic garnet films is applied to investigate the pattern evolution. After demagnetization of the sample we obtain a branched (fernlike) structure. By periodic modulation of the magnetic field the number of the branches diminishes and a labyrinthine pattern develops. We describe the evolution of the pattern by a measure extracted from the curvature of the border line of the magnetic domains. The relaxation of this measure is found to be nonexponential and can be described by the Kohlrausch-Williams-Watts law.