Aging in the ferromagnetic phase of terbium

摘要: We report on aging, rejuvenation and memory effects in the ferromagnetic phase of pure terbium. have applied an experimental method specifically for investigating slow dynamics spin glasses, because these cannot be interpreted as conventional diffusion after-effects. Results show that relaxation times magnetic response are widely distributed, isothermal aging shifted distribution towards longer durations. If sample was heated/cooled after such shortened if starting anew; behavior resembles glasses. Uniform magnetization experiments indicate that, unlike correlations not returned to disorder by thermal perturbations. In contrast with recovered once disappear, even system is its initial temperature. The observed results can explained collective pinning domain walls which potential given a rugged temperature-sensitive energy landscape.