Macroscopic quantum tunneling of the total magnetization in small ferromagnetic grains

Anupam K Garg*, Gwang Hee Kim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The tunneling of the total magnetization of a single-domain spherical (∼100-Å-diam) particle is considered for various crystal symmetries, with special attention to the dissipative effect of phonons in the grain and any embedding matrix. Such dissipation is shown to have a spectral density J(ω)∼ω3 and to be very weak. Stray fields and interparticle interactions are also considered.

Original languageEnglish (US)
Pages (from-to)5669-5671
Number of pages3
JournalJournal of Applied Physics
Volume67
Issue number9
DOIs
StatePublished - Dec 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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