Percolation model for relaxation in random systems

Ralph Chamberlin, D. N. Haines

Research output: Contribution to journalArticle

65 Scopus citations

Abstract

We have measured the magnetic relaxation of several Au:Fe alloys from 10-5 to 104 sec after removing an applied field. The quality and range of the data are sufficient to demonstrate significant deviations from all functions previously used to characterize the dynamics of similar systems. A simple model, activated relaxation of dispersive excitations on a percolation distribution of finite-sized domains, gives excellent agreement with the measurements and may provide a common link between fundamental excitations and observed behavior in random systems.

Original languageEnglish (US)
Pages (from-to)2197-2200
Number of pages4
JournalPhysical Review Letters
Volume65
Issue number17
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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