Size and field effect on mesoscopic spin glass

K. Komatsu, H. Maki, T. Taniyama, T. Sato

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Spin glass particles were prepared as the mesoscopic system in order to examine the space scale of spin glass domain (droplet). The peak temperature Tpeak in the temperature-dependent magnetization is systematically reduced with decreasing average particle size. This is due to the imitation of droplet growth to the particle diameter. The magnetic field H also decreases Tpeak, which is caused by the reduction of the barrier height by Zeeman energy. However, there appears different tendency in the relation between H and Tpeak below 100 Oe. This indicates the existence of crossover between the two regimes in which the free energy and Zeeman energy govern the droplet excitation.

Original languageEnglish
Pages (from-to)1500-1502
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • Aging
  • Domain
  • Droplet
  • Fine pariticle
  • Magnetic field
  • Mesoscopic
  • Spin glass

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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