Size and field effect on mesoscopic spin glass

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

研究成果: Article査読

2 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1500-1502
ページ数3
ジャーナルJournal of Magnetism and Magnetic Materials
310
2 SUPPL. PART 2
DOI
出版ステータスPublished - 2007 3

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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