Mechanism of interfacial magnetoelectric coupling in composite multiferroics

Jia, Chenglong; Wei, Tongli; Jiang, Changjun; Xue, Desheng; Sukhov, Alexander; Berakdar, J.

doi:10.1103/physrevb.90.054423

Cited by 59 publications

(81 citation statements)

References 64 publications

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“…We implement a numerical simulation for the electricfield-driven multiferroic 16 16 × square lattice sample, and a dimensionless parameter site { *…”

Section: Resultsmentioning

confidence: 99%

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Dynamic response in a finite size composite multiferroic thin film

Wang

Grimson

2016

Journal of Applied Physics

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Composite multiferroics, heterostructures of ferromagnetic (FM) and ferroelectric (FE) materials, are characterized by a remarkable magnetoelectric effect at the interface. Previous work has supported the ferromagnetic structure with magnetic spins and the ferroelectric with pseudospins which act as electric dipoles in a microscopic model, coupled with a magnetoelectric interaction [J. Appl. Phys. 118, 124109 (2015)]. In this work, by solving the stochastic Landau-Lifshitz-Gilbert equation, the electric-field-induced magnetization switching in a twisted boundary condition has been studied, and a behavior of domain wall in the ferromagnetic structure is discussed.

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“…We implement a numerical simulation for the electricfield-driven multiferroic 16 16 × square lattice sample, and a dimensionless parameter site { *…”

Section: Resultsmentioning

confidence: 99%

“…Thus, the combination of FM and FE phases generates an enormous magnetoelectric effect [14,15]. Electrostatic screening provides another origin and this has been studied by C. L. Jia et.al [16]. In this paper, we consider a general linear and quadratic magnetoelectric couplings at the FM/FE interface.…”

Section: Introduction Composite Multiferroic Materialsmentioning

confidence: 99%

Dynamic response in a finite size composite multiferroic thin film

Wang

Grimson

2016

Journal of Applied Physics

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“…The other category is the composite multiferroics, which are the artificially synthesized heterostructure of two materials, one a ferromagnet and the other a ferroelectric [18].…”

Section: Multiferroic Materialsmentioning

confidence: 99%

Driving skyrmions in a composite bilayer

Wang

Grimson

2016

Phys. Rev. B

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Magnetic skyrmions and multiferroics are the most interesting objects in nanostructure science that have great potential in future spin-electronic technology. The study of the multiferroic skyrmions has attracted much interest in recent years. This paper reports on the magnetic skyrmions induced by an electric driving field on a composite multiferroic lattice. By using the spin dynamics method, we use a classical magnetic spin model and an electric pseudospin model, which are coupled by a strong magnetoelectric coupling in the dynamical simulations. Interestingly, we observe some skyrmion-like objects on the electric component during the switching process, which is due to the connection between the electric and the magnetic structures.

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“…The range of the spiral defect is set by the spin diffusion length λ m 27 which is much larger than the charge screening length.This spin-spiral constitutes a magnetoelectric effect that has a substantial influence on the traversal magnetization dynamics of FM layers with thickness over tens of nanometers 28 . The interfacial spiral spin density can be viewed as a magnonic accumulation stabilized by the interfacial, spin-dependent charge rearrangement at the contact region between the FM and the ferroelectrics (having the FE polarization P) and by the uniform (bulk) magnetization of FM far away from the interface 30 . P responds to an external electric field and so does the magnetic dynamics.…”

Section: Introductionmentioning

confidence: 99%

Gate-controlled magnon-assisted switching of magnetization in ferroelectric/ferromagnetic junctions

Chen

Berakdar

et al. 2017

Phys. Rev. B

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Interfacing a ferromagnet with a polarized ferroelectric gate generates a non-uniform, interfacial spin density coupled to the ferroelectric polarization. This coupling allows for an electric field control of the effective field acting on the magnetization. To unravel the usefulness of this interfacial magneto-electric coupling we investigate the magnetization dynamics of a ferroelectric/ferromagnetic multilayer structure using the Landau-Lifshitz-Baryakhtar equation. The results demonstrate that the interfacial magnetoelectric coupling is utilizable as a highly localized and efficient tool for manipulating magnetism by electrical means. Ways of enhancing the strength of the interfacial coupling and/or its effects are discussed.

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Mechanism of interfacial magnetoelectric coupling in composite multiferroics

Cited by 59 publications

References 64 publications

Dynamic response in a finite size composite multiferroic thin film

Dynamic response in a finite size composite multiferroic thin film

Driving skyrmions in a composite bilayer

Gate-controlled magnon-assisted switching of magnetization in ferroelectric/ferromagnetic junctions

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