Mesoscopic model for the primary response of magnetic materials (invited)

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


A model for the relaxation of thermal fluctuations is applied to the dynamical response of magnetic materials. Systems investigated include paramagnets, spin glasses, and ferromagnets. The key feature which distinguishes the model is that it describes the behavior of localized normal modes (e.g., magnons), not barrier hopping or domain-wall motion. Mathematical approximations to the model reproduce several previously used empirical formulas, such as the stretched exponential, power-law, and logarithmic time dependences, but the unapproximated model gives generally better agreement with observed response. Data of sufficient quality and range allow quantitative confirmation of all assumptions of the model. The model provides a common physical basis for observed magnetic after-effects, the magnitude and distribution of Landau-Lifshitz damping parameters, and 1/f noise.

Original languageEnglish (US)
Pages (from-to)6401-6406
Number of pages6
JournalJournal of Applied Physics
Issue number10
StatePublished - 1994

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Mesoscopic model for the primary response of magnetic materials (invited)'. Together they form a unique fingerprint.

Cite this