Magnetoelectricity of Chiral Micromagnetic Structures

Pyatakov, A. P.; Gareev, T. T.; Kaminskiy, A. S.; Antipin, K. S.; Николаева, Е. П.; Kulikova, Daria P.; Сергеев, А. С.; Николаев, А.В.

doi:10.1007/978-3-030-62844-4_6

Cited by 6 publications

(3 citation statements)

References 60 publications

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“…Recently, local ferroelectricity of a micromagnetic origin, i.e., electric polarization related to a micromagnetic configuration rather than to a chemical composition or crystal structure, has been found [6,7]. The local symmetry violation due to spatial spin modulation results in the electric polarization of micromagnetic structures such as bubble domains [8], domain walls [9], Bloch lines [10], and magnetic vortices and skyrmions [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Magnetic-field tuning of domain-wall multiferroicity

Vakhitov

Solonetsky

Gurjanova³

et al. 2021

Phys. Rev. B

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Néel-type magnetic domain walls locally reduce the symmetry of the crystal and give rise to electric polarization. This type of localized multiferroicity is particularly promising due to the sensibility of the domain wall's internal structure to the magnetic field. In this paper, the magnetic-field-modified electric polarization of the domain wall is considered and compared to the room-temperature giant magnetoelectric effect observed on domain walls in iron garnet films.

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Section: Introductionmentioning

confidence: 99%

Magnetic-field tuning of domain-wall multiferroicity

Vakhitov

Solonetsky

Gurjanova³

et al. 2021

Phys. Rev. B

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“…It stabilizes chiral magnetic structures-cycloids, spirals, 2D vortices, skyrmions, and 3D hopfions-affects the spin dynamics, and gives impact to magnetoelectricity. Magnetoelectric effect in improper multiferroics is mainly attributed to DMI; however, the physical mechanisms, such as DMI-induced polarization of electronic orbitals [5], ferroelectric lattice displacements [6], and the stabilization of incommensurate spin structures, which, in its turn, hosts ferroelectricity [7], are still under discussion. Nevertheless, the existing relationship between the ME effect and DMI allows for the expectation that correct implementation of DMI in multiferroic heterostructures can lead to an improvement in magnetoelectric properties.…”

Section: Introductionmentioning

confidence: 99%

“…Examples to consider include BiFeO 3 /SrRuO 3 , studied in Ref. [7] and Sr 2 IrO 4 /SrTiO 3 or Sr 2 IrO 4 /BaTiO 3 superlattices, studied in Ref. [16].…”

Section: Introductionmentioning

confidence: 99%

2D-Perovskite Multiferroics: Interface-Induced Magnetoelectric Effect in Perovskite-Based Multiferroic Superlattices

Gareeva,

Sharafullin,

Zvezdin

2023

Crystals

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Multiferroics are materials crucial for energy-efficient scalable electronics. The implementation of an effective combination of ferroic orderings on the nanoscale requires the design of new multiferroic materials. Recently, there have been observations of magnetoelectricity in the antiferromagnetic Ruddlesden-Popper and perovskite oxides with the interfacial Dzyaloshinskii-Moriya interaction. We propose a model for studying magnetic states and magnetoelectric effects in magnetoelectrically coupled antiferromagnetic–ferroelectric bi-layers with the interfacial Dzyaloshinskii–Moriya interaction. The ground magnetic states are calculated for a system on a rectangular lattice, with Heisenberg spins interacting with each other via an antiferromagnetic exchange interaction and a Dzyaloshinskii–Moriya interaction in the absence of an external magnetic field. Our calculations show that the interfacial Dzyaloshinskii-Moriya interaction in the considered system leads to the stabilization of topological skyrmionic states in a zero magnetic field. We explore transformations of magnetic states considering the changes in the in-plane magnetic anisotropy constant and the magnetoelectric coupling parameter. Our findings have shown the possibility of the existence of several magnetic configurations: a skyrmion lattice, a skyrmion state, and a uniform antiferromagnetic ordering realized at a definite ratio of the system parameters. We determine the areas of the phases existence and the conditions required for spin-reorientation phase transitions.

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