Aging behavior of spin glass fine particles in restricted space

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

Research output: Contribution to journalConference article

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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