Aging behavior of spin glass fine particles in restricted space

K. Komatsu, T. Sato, P. Jönsson, H. Takayama

Research output: Contribution to journalConference articlepeer-review

Abstract

We examined the isothermal aging in spin glass AuFe fine particles so as to study the length scale of droplet in comparison with the particle size. Relaxation rates S in spin glass AuFe fine particles were obtained at 15, 28 and 32K. A peak in S was observed at the observation time corresponding to the waiting time at 15K, but it was observed at a time shorter than the waiting time at 28K. The waiting time dependence of S is weakened at 32K. This suggests that the droplet size increases up to the particle size and the growth successively stops at high temperatures.

Original languageEnglish
Pages (from-to)1321-1322
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
DOIs
Publication statusPublished - 2004 May 1
EventProceedings of the International Conference on Magnetism - Rome, Italy
Duration: 2003 Jul 272003 Aug 1

Keywords

  • Aging
  • Droplet
  • Fine particles
  • Spin glass

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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