Magnetic relaxation and quantum tunneling in nanocrystalline particles

Xixiang Zhang*, R. Ziolo, E. C. Kroll, X. Bohigas, J. Tejada

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Low-temperature magnetic relaxation phenomena have been studied in two samples consisting of nanocrystalline γ-Fe 2 O 3 and polymer in either water (as ferrofluid) or in potassium silicate (as glass). The relaxation of the magnetization follows a logarithmic law and the magnetic viscosity, S, tends to be independent of temperature below 2.1 K for the glass sample, giving evidence of macroscopic quantum tunneling of the magnetization.

Original languageEnglish (US)
Pages (from-to)1853-1854
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume140-144
Issue numberPART 3
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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