On the Free Energy of the Flexomagnetoelectric Interactions

Details On the Free Energy of the Flexomagnetoelectric Interactions On the Free Energy of the Flexomagnetoelectric Interactions

2011-05-26

arxiv.org/abs/1105.5300v1

B.M. Tanygin, Journal of Magnetism and Magnetic Materials, Volume 323, Issue 14 (2011) Pages 1899-1902

Physics

Condensed Matter

Materials Science

12 pages, Accepted for publication in the Journal of Magnetism and Magnetic Materials

Scientific paper

10.1016/j.jmmm.2011.02.035

It was shown that free energy density of the local flexomagnetoelectric effect is determined by the four phenomenological constants in case of the cubic (hexoctahedral) crystal. The well-known single-constant Lifshitz invariant term is correct only when fixed electric polarization induces the inhomogeneity of the magnetization. Proposed phenomenological theory was applied to the magnetic domain walls. The domain wall structure has been investigated in details. The four-constant phenomenological theory conforms to the symmetry based predictions (V.G. Bar'yakhtar et al., 1984). The proposed experimental verification of the four-constant flexomagnetoelectric phenomenology is a detection of the shift of the N\'eel domain walls under the strong homogeneous electric field.

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