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Physical Review Letters
Paper

Runaway "fingerlike" instability of magnetic walls in ultrathin layers

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Abstract

Smooth domain walls in ultrathin ferromagnetic film were investigated. It was shown that the walls can develop jaggedness even in the absence of random defects. From the Kerr imaging of 0.7 nm thin Co films and from numerical simulations, a previously unseen runaway fingerlike instability in magnetic wall was reported. Results show that a threshold for the instability is controlled by ferromagnet's parameters.

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Publication

Physical Review Letters

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