Magnetic Topological Structures in Multiferroics |
| Z. Gareevaa,b, K. Zvezdinc, A. Popkovd and A. Zvezdinc,e
aInstitute of Molecule and Crystal Physics, Russia Academy of Sciences, pr. Octyabrya 151, Ufa, Russia bBashkir State University, ul. Z. Validi, 32, Ufa, Russia cA.M. Prokhorov General Physics Institute, Russia Academy of Sciences, ul.Vavilova 38, Moscow, Russia dNational Research University of Electronic Technology, Shokin Square 1, Zelenograd, Moscow, Russia eFaculty of Physics, National Research University Higher School of Economics, Myasnitskaya 20, 101000 Moscow, Russia |
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| In this article we focus on impact of micromagnetic structures on magnetoelectricity of multiferroics. We discuss physical mechanisms of magnetoelectric coupling considering domain walls and spin cycloids. We review the progress on multiferroic materials focusing on high temperature multiferroic: rare earth iron garnet and bismuth ferrite. We argue that topological structures play a pivotal role in multiferoics and show that electric control of magnetism can be carried out via spin spirals and domain walls. Magnetic domain walls produce ferroelectricity in rare earth iron garnets; Transformations of spin cycloids release magnetoelectricity in bismuth ferrite. Ferroic orders couple via magnetic inhomogeneities, which shed new light on fundamental physics and applications. |
DOI: 10.12693/APhysPolA.133.380 PACS numbers: 75.85.+t, 75.50.Ee, 75.30.Fv, 75.50.Gg,75.60.Ch |