2026-04-13T02:02:11Zhttps://recercat.cat/oai/request

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

2024-11-26T18:57:22Z urn:hdl:2445/205995 The role of thermal coupling on avalanches in manganites Macià Bros, Ferran Abril, G. Hernández Ferràs, Joan Manel Tejada Palacios, Javier Propietats magnètiques Materials magnètics Magnetic properties Magnetic materials 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. 2024-11-26T18:57:22Z 2024-11-26T18:57:22Z 2024-01-19T15:03:04Z 2024-01-19T15:03:04Z 2009-09-14 2024-01-19T15:03:04Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/2445/205995 Versió postprint del document publicat a: https://doi.org/10.1088/0953-8984/21/40/406005 Journal of Physics: Condensed Matter, 2009, vol. 21 https://doi.org/10.1088/0953-8984/21/40/406005 (c) IOP Publishing, 2009 info:eu-repo/semantics/openAccess IOP Publishing