Relaxation in magnetic nanostructures

R. Skomski, J. Zhou, D. J. Sellmyer

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The damping of magnetization processes in nanostructures is investigated by Fokker-Planck-type model calculations and quantum-mechanical considerations based on Fermi's golden rule. In the absence of energy barriers, the problem reduces to a magnetic diffusion equation with a particle-size-dependent diffusivity which is indirectly proportional to the relaxation-time parameter τo. For small particles, the relaxation time is proportional to the particle volume, but when the particle size reaches a few nanometers, it approaches a constant bulk value.

Original languageEnglish (US)
Article number10A702
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
StatePublished - May 15 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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