2026-04-13T05:44:07Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/108572025-12-04T20:46:09Zcom_2072_1057col_2072_478822col_2072_478917

00925njm 22002777a 4500 dc García del Muro y Solans, Montserrat author Batlle Gelabert, Xavier author Labarta, Amílcar author 2010-01-25T12:02:32Z 2010-01-25T12:02:32Z 1999 BaFe10.4Co0.8Ti0.8O19 magnetic fine particles exhibit most of the features attributed to glassy behavior, e.g., irreversibility in the hysteresis loops and in the zero-field-cooling and field-cooling curves extends up to very high fields, and aging and magnetic training phenomena occur. However, the multivalley energy structure of the glassy state can be strongly modified by a field-cooling process at a moderate field. Slow relaxation experiments demonstrate that the intrinsic energy barriers of the individual particles dominate the behavior of the system at high cooling fields, while the energy states corresponding to collective glassy behavior play the dominant role at low cooling fields. Propietats magnètiques Vidres de spin Magnetic properties Spin glasses Erasing the glassy state in magnetic fine particles