Title: Propagation of Magnetic Avalanches in Mn12Ac at High Field Sweep Rates
Authors: Decelle, Wim ×
Vanacken, Johan
Moshchalkov, Victor
Tejada, J
Hernandez, J. M
Macia, F #
Issue Date: Jan-2009
Publisher: American Physical Society
Series Title: Physical review letters vol:102 issue:2 pages:1-4
Article number: 027203
Abstract: Time-resolved measurements of the magnetization reversal in single crystals of Mn12Ac 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 Mn12Ac, 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.
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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