Onset of a Propagating Self-Sustained Spin Reversal Front in a Magnetic System
arXiv:1301.1900 · doi:10.1103/PhysRevLett.110.207203
Abstract
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.
5 pages and 4 figures