Slow Dynamics for Spin-Glass-Like Phase of a Ferromagnetic Fine Particle System

Abstract

Effects of temperature changes on aging phenomena are studied for the spin-glass-like phase of a ferromagnetic fine particle system. The results obtained during the short experimental periods are, in appearance, asymmetric about temperature changes. However, the extension of the periods shows that the effects of temperature changes are symmetric. These results can be explained by the droplet model well.