Onset of a propagating self-sustained spin reversal front in a magnetic system

The energy released in a magnetic material by reversing spins as they relax toward equilibrium can lead to a dynamical instability that ignites self-sustained rapid relaxation along a deflagration front that propagates at a constant subsonic speed. Using a trigger heat pulse and transverse and longi...

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Bibliographic Details
Published in:Physical review letters 2013-05, Vol.110 (20), p.207203-207203, Article 207203
Main Authors: Subedi, P, Vélez, S, Macià, F, Li, S, Sarachik, M P, Tejada, J, Mukherjee, S, Christou, G, Kent, A D
Format: Article
Language:English
Subjects:
Camps magnètics
Field theory (Physics)
Magnetic fields
Teoria de camps (Física)
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Summary:The energy released in a magnetic material by reversing spins as they relax toward equilibrium can lead to a dynamical instability that ignites self-sustained rapid relaxation along a deflagration front that propagates at a constant subsonic speed. Using a trigger heat pulse and transverse and longitudinal magnetic fields, we investigate and control the crossover between thermally driven magnetic relaxation and magnetic deflagration in single crystals of Mn(12)-acetate.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.110.207203