Magnetically switched electric polarity of domain walls in iron garnet films

Pyatakov, A. P.; Sechin, D. A.; Сергеев, А. С.; Николаев, А.В.; Николаева, Е. П.; Логгинов, А. С.; Zvezdin, A. K.

doi:10.1209/0295-5075/93/17001

Cited by 65 publications

(55 citation statements)

References 51 publications

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“…Different phenomena correspond to the cases of the coupling with homogeneous [3][4][5][6][7] and inhomogeneous [8][9][10][11][12][13] magnetization. The latter type of phenomena exists in the magnetic domain walls [8,[12][13][14][15][16][17] and magnetic vortexes [18,19]. These types of the magnetoelectric interactions have been described by the Lifshitz invariant-like single-constant coupling term P i (M j r k M n À M n r k M j ) [11,17].…”

Section: Introductionmentioning

confidence: 99%

“…The FME effects have been observed in different experiments: switching the helicity with electric field in orthorhombic manganites RMnO 3 (R¼Dy,Tb) [24,25] and MnWO 4 [26], the motion of domain walls in the gradient electric field in (BiLu) 3 (FeGa) 5 O 12 films [14,15], incommensurate spin-density-wave state observed in the ferroelectric BiFeO 3 [27]. The indirect evidence of the FME effect can be seen in the enhancement of electromagnetooptical effect (i.e.…”

Section: Introductionmentioning

confidence: 99%

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On the free energy of the flexomagnetoelectric interactions

Tanygin

2011

Journal of Magnetism and Magnetic Materials

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a b s t r a c tIt 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 singleconstant 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 (Bar'yakhtar et al., 1984, [12]). The proposed experimental verification of the four-constant flexomagnetoelectric phenomenology is a detection of the shift of the Né el domain walls under the strong homogeneous electric field.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the free energy of the flexomagnetoelectric interactions

Tanygin

2011

Journal of Magnetism and Magnetic Materials

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“…In our experiment we have directly observed the motion of domain walls in the gradient electric field provided by a tip electrode [31][32][33][34]. Fig.…”

Section: Electric Polarization Of Magnetic Domain Wallsmentioning

confidence: 99%

“…In this paper we commemorate Prof. A.S. Logginov's (1940Logginov's ( -2011 impact on experimental research in this field. The support from RFBR Grant nos.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Electric polarization of magnetic textures: New horizons of micromagnetism

Pyatakov¹,

Мешков²,

Zvezdin³

2012

Journal of Magnetism and Magnetic Materials

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a b s t r a c tA common scenario of magnetoelectric coupling in multiferroics is the electric polarization induced by spatially modulated spin structures. It is shown in this paper that the same mechanism works in magnetic dielectrics with inhomogeneous magnetization distribution: the domain walls and magnetic vortexes can be the sources of electric polarization. The electric field driven magnetic domain wall motion is observed in iron garnet films. The electric field induced nucleation of vortex state of magnetic nanodots is theoretically predicted and numerically simulated. From the practical point of view the electric field control of micromagnetic structures suggests a low-power approach for spintronics and magnonics.

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“…The use of domain walls and other topological defects in multiferroics [2] for magnetic storage are very promising since they provide a mechanism of very dense packing of information, while topological nature protects information from loss under the influence of external perturbations such as heating or mechanical action. Among the bright examples of such topological defects are skyrmion lattices [3], as well as individual skyrmions observed in magnetoelectric materials [4], magnetic vortices [5,6], and domain walls [7,8].…”

Section: Introductionmentioning

confidence: 99%

Polarizability of electrically induced magnetic vortex “atoms”

Karpov

Mukhin

2018

EPJ Web Conf.

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Abstract. Electric field control of magnetic structures, particularly topological defects in magnetoelectric materials, draws a great attention, which has led to experimental success in creation and manipulation of single magnetic defects, such as skyrmions and domain walls. In this work we explore a scenario of electric field creation of another type of topological defects -magnetic vortices and antivortices. Because of interaction of magnetic and electric subsystems each magnetic vortex (antivortex) in magnetoelectric materials possesses quantized magnetic charge, responsible for interaction between vortices, and electric charge that couples them to electric field. This property of magnetic vortices makes possible their creation by electric fields. We show that the electric field, created by a cantilever tip, produces a "magnetic atom" with a localized spot of ordered vortices ("nucleus" of the atom) surrounded by antivortices ("electronic shells"). We analytically find the vortex density distribution profile and temperature dependence of polarizability of this structure and confirm it numerically by Monte Carlo simulation.

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Magnetically switched electric polarity of domain walls in iron garnet films

Cited by 65 publications

References 51 publications

On the free energy of the flexomagnetoelectric interactions

On the free energy of the flexomagnetoelectric interactions

Electric polarization of magnetic textures: New horizons of micromagnetism

Polarizability of electrically induced magnetic vortex “atoms”

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