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.
|ジャーナル||Journal of Magnetism and Magnetic Materials|
|出版ステータス||Published - 2004 5月 1|
|イベント||Proceedings of the International Conference on Magnetism - Rome, Italy|
継続期間: 2003 7月 27 → 2003 8月 1
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