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Article

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2009

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/133448

Propagation of Magnetic Avalanches in Mn12Ac at High Field Sweep Rates

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https://doi.org/10.1103/PhysRevLett.102.027203

Abstract

Time-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.

Subject

Física de partícules, Camps magnètics

Subject (English)

Particle physics, Magnetic fields

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

DECELLE, W., et al. Propagation of Magnetic Avalanches in Mn12Ac at High Field Sweep Rates. Physical Review Letters. 2009. Vol. 102, num. 2, pags. 027203. ISSN 0031-9007. [consulted: 13 of August of 2026]. Available at: https://hdl.handle.net/2445/133448

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