Magneto-optical imaging of magnetic deflagration in Mn12-Acetate

Details Magneto-optical imaging of magnetic deflagration in Mn12-Acetate Magneto-optical imaging of magnetic deflagration in Mn12-Acetate

2009-06-14

arxiv.org/abs/0906.2562v1

EPL, 84 (2008) 67010

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 two-column pages, 3 figures, EPL style

Scientific paper

10.1209/0295-5075/84/67010

For the first time, the morphology and dynamics of spin avalanches in Mn12-Acetate crystals using magneto-optical imaging has been explored. We observe an inhomogeneous relaxation of the magnetization, the spins reversing first at one edge of the crystal and a few milliseconds later at the other end. Our data fit well with the theory of magnetic deflagration, demonstrating that very slow deflagration rates can be obtained, which makes new types of experiments possible.

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