Clamping of ferroelectric and ferromagnetic domain walls in conical spiral magnets

Andrea Scaramucci; Thomas A. Kaplan; Maxim Mostovoy

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arXiv · 0906.5298

Clamping of ferroelectric and ferromagnetic domain walls in conical spiral magnets

Andrea Scaramucci·Thomas A. Kaplan·Maxim Mostovoy

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Abstract

We study the structure of domain walls in multiferroic magnets with the conical spiral ordering. We formulate a simple spin model which has a conical spiral ground state in absence of magnetic anisotropies. We find a transition from the regime where ferromagnetic and ferroelectric domain walls are clamped to the regime where they are decoupled and derive a continuum model describing rotation of the spiral plane at the domain wall. The importance of these results for the switching phenomena observed in CoCr2O4 is discussed.

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Andrea Scaramucci, Thomas A. Kaplan, Maxim Mostovoy. 2009-06-29. Clamping of ferroelectric and ferromagnetic domain walls in conical spiral magnets. https://arxiv.org/abs/0906.5298

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