Decelle, W.Vanacken, J.Moshchalkov, V. V.Tejada Palacios, JavierHernández Ferràs, Joan ManelMacià Bros, Ferran2019-05-202019-05-2020090031-9007https://hdl.handle.net/2445/133448Time-resolved measurements of the magnetization reversal in single crystals of Mn 12 Ac in pulsed magnetic fields, at magnetic field sweep rates from 1.5     kT / s up to 7     kT / s , suggest a new process that cannot be scaled onto a deflagrationlike propagation driven by heat diffusion. The sweep rate dependence of the propagation velocity, increasing from a few 100     m / s up to the speed of sound in Mn 12 Ac , indicates the existence of two new regimes at the highest sweep rates, with a transition around 4     kT / s that can be understood as a magnetic deflagration-to-detonation transition.4 p.application/pdfeng(c) American Physical Society, 2009Física de partículesCamps magnèticsParticle physicsMagnetic fieldsinfo:eu-repo/semantics/article6212862019-05-20info:eu-repo/semantics/openAccess