2002/03/31 by V. Dupuis, E. Vincent, M. Alba +1
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Chemical and Physical Properties of Materials #Theoretical and Computational Physics #cond-mat.dis-nn
paper · pdf · doi:10.1140/epjb/e2002-00257-y
published as Eur. Phys. J. B 29, 19-26 (2002) · Service de Physique de l'Etat Condense, DRECAM, DSM, CEA Saclay,91191 Gif sur Yvette Cedex, France, 9 pages, including 7 figures, To appear in Eur. Phys. J. B (2002)
arxiv created 2002/07/09 · openalex publication_date 2002/09/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have studied the slow dynamics of the ferromagnetic phases of the re-entrant CdCr2xIn2-2xS4 system for 0.85<x<=1 by means of low frequency ac susceptibility and magnetization measurements. Experimental procedures widely used in the investigation of the out-of-equilibrium dynamics of spin glasses (such as the x=0.85 compound) have been applied to search for aging, rejuvenation and memory effects, and to test their dependence on the disorder introduced by dilution of the magnetic ions. Whereas the rejuvenation effect is found in all studied samples, the memory effect is clearly enhanced for increasing dilutions. The results support a description of aging in both ferromagnetic and re-entrant spin-glass phases in terms of hierarchical reconformations of domain walls pinned by the disorder.