2026-04-13T02:32:58Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2059952024-11-26T18:57:23Zcom_2072_1057col_2072_478822col_2072_478917

00925njm 22002777a 4500 dc Macià Bros, Ferran author Abril, G. author Hernández Ferràs, Joan Manel author Tejada Palacios, Javier author 2024-01-19T15:03:04Z 2024-01-19T15:03:04Z 2009-09-14 2024-01-19T15:03:04Z We report here a study on the environmental dependence of the occurrence, at low temperature, of ultra-sharp field induced avalanches in phase separated manganites. Despite the high reproducibility of avalanches, it has already been observed that the critical fields shift with the magnetic field sweep rate and that different sample sizes lead to different ignition fields for the avalanches. Critical growing rates have been suggested to describe the avalanche ignition though the role of thermal coupling has hardly been considered. We qualitatively analyze here a set of experimental data on avalanches in manganites and discuss the role of thermal coupling as a key parameter of the instability in a dynamical system. http://hdl.handle.net/2445/205995 Propietats magnètiques Materials magnètics Magnetic properties Magnetic materials The role of thermal coupling on avalanches in manganites