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Filippov, B. N.; Korzunin, L. G.; Sycheva, O. V.; Beresnev, V. I.

doi:10.1023/a:1012541532286

Cited by 4 publications

(12 citation statements)

References 2 publications

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“…These domain walls exhibit a feature that distinguishes them from the conventional twisted domain walls (Fig. 4) and from the 180 degree vortex like domain walls, which are characteristic of the geometry with the easy magneti zation axis lying in the film plane (see, for example, [1,2,11,12]). This feature lies in the fact that the polar ization of a 109 degree vortex like domain wall (taken as ±1 for two possible directions of the magnetization m(0, 0, ±1) at the points A, C, and A 1 in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In magnetically uniaxial films with in plane anisot ropy, there are asymmetric vortex like domain walls with a two dimensional distribution of the magnetiza tion M and an almost closed magnetic flux [1,2,11,12]. Similar domain walls have also been found in sin gle crystal films with a lattice of cubic symmetry (see [13] and references therein).…”

Section: Introductionmentioning

confidence: 82%

“…1). The expression for the contribution to the energy density of the mag netically anisotropic interaction corresponding to the tetra axial anisotropy is obtained as a result of the transition from the coordinate system related to the crystallographic axes [ nents with the tilde) to the coordinate system related to the film (components without the tilde): (2) provided that, in the coordinate system related to the crystallographic axes, the tetra axial anisotropy energy has the standard form…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…Analytical solu tions for equations of this type can be obtained only in exceptional cases after the introduction of a number of simplifying assumptions (usually, significantly distort ing the original statement of the problem). For this reason, problems of the considered type have usually been solved using numerical micromagnetic simula tion [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…At present, structures of domain walls with two dimensional and three dimensional distributions of the magnetization have been thoroughly studied in magnetically uniaxial films with both perpendicular [7][8][9][10] and in plane [1,2,11,12] anisotropies. In the case of perpendicular anisotropy, researchers have considered films with the quality factor Q = K/ (where K is the anisotropy constant and M s is the satu ration magnetization), which can be larger [7][8][9][10] and 2πM s 2 smaller [13] than unity.…”

Section: Introductionmentioning

confidence: 99%

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Two-dimensional micromagnetic simulation of domain structures in films with combined anisotropy

2013

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Abstract-The transformation of the domain structure of micrometer thick films with variations in the induced uniaxial anisotropy constant with the easy magnetization axis perpendicular to the film surface has been investigated using numerical micromagnetic simulation in the framework of a two dimensional model of the magnetization distribution. The case where the tetra axial crystallographic anisotropy exists in the film with uniaxial magnetic anisotropy has been considered. The transformation of the open domain structure into the structure with a magnetic flux closed inside the sample has been investigated in detail, and new types of 109 degree and 90 degree vortex like domain walls and periodic domain structures have been obtained.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 82%

Section: Statement Of the Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Two-dimensional micromagnetic simulation of domain structures in films with combined anisotropy

2013

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Influence of surface and bulk anisotropies on domain structures in a thin plate

Shiling

Tolstobrov

2010

Russ Phys J

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The method of micromagnetic modeling is used to investigate the influence of the surface anisotropy of easy plane type on the domain structures in a thin uniaxial magnetic plate for different values of the bulk anisotropy constant. The easy magnetization direction is oriented perpendicularly to the plate plane. It is established that for low and high bulk anisotropy values, the surface anisotropy has no significant effect on the magnetization field M. For some intermediate values of the bulk anisotropy constant, the surface anisotropy can influence the structure of the domain boundaries and change qualitatively the domain structure of the sample.Keywords: micromagnetic modeling, surface anisotropy, bulk anisotropy, magnetization field, domain structure, thin plate.In a number of works (for example, see [1,2]), the methods of micromagnetic modeling were used to investigate the influence of the surface anisotropy on the structure and mobility of the domain boundaries, but usually, the effect of the surface anisotropy was neglected in calculations of the domain structures. In the present work, the influence of the surface anisotropy on domain structures in a uniaxial magnetic plate is studied for different bulk anisotropy constants. The system of coordinates is oriented such that the z axis is orthogonal to the plate plane. The magnetization field is considered to be three-dimensional ( ) x, y,z = M M . It is calculated by finding stationary solutions to the Landau-Lifshits equation [3] written in the following dimensionless form: ( ) ∂ = − × − α × × ∂τ m m H m m H , (1) where / ( , , ) x y z s M m m m = = m M is the unit vector, s

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10.1007/s11451-008-2001-4

2010

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Untitled

Cited by 4 publications

References 2 publications

Two-dimensional micromagnetic simulation of domain structures in films with combined anisotropy

Two-dimensional micromagnetic simulation of domain structures in films with combined anisotropy

Influence of surface and bulk anisotropies on domain structures in a thin plate

10.1007/s11451-008-2001-4

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