| Issue |
Europhys. Lett.
Volume 62, Number 5, June 2003
|
|
|---|---|---|
| Page(s) | 664 - 670 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2003-00425-9 | |
| Published online | 01 May 2003 | |
Scaling of the magnetic linear response in phase-ordering kinetics
1
Laboratoire de Physique des Matériaux (Laboratoire associé au CNRS UMR 7556.) , Université Henri Poincaré Nancy I B.P. 239, F-54506 Vandœuvre lès Nancy Cedex, France
2
Institut für Festkörperforschung (Theorie II), Forschungszentrum Jülich D-52425 Jülich, Germany
3
Institut für Theoretische Physik I, Universität Erlangen-Nürnberg D-91058 Erlangen, Germany
Received:
25
November
2002
Accepted:
7
April
2003
The scaling of the thermoremanent magnetization and of the
dissipative part of the non-equilibrium magnetic susceptibility
is analysed as a function of the waiting time s for a simple
ferromagnet undergoing phase-ordering kinetics after a quench
into the ferromagnetically ordered phase. Their scaling forms
describe the crossover between two power law regimes governed by
the non-equilibrium exponents a and 
,
respectively. A relation between a, the dynamical exponent z
and the equilibrium exponent η is derived from scaling
arguments. Explicit tests in the Glauber-Ising model and the
kinetic spherical model are presented.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) / 64.60.Ht – Dynamic critical phenomena
© EDP Sciences, 2003
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