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Vogler, F.; Berg, M.; Hofmann, A.; Wagner, H.

doi:10.1103/physrevc.9.242

Cited by 6 publications

(6 citation statements)

References 25 publications

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“…The basic strategy is to track the magnetization evolution of the two sublattices separately. For an arbitrary grain (i) containing two FM sublattices (v, ), if no interaction of this grain with its neighbors is considered, the LLB equation for magnetization mv of sublattice v is written as: 19   22 1…”

mentioning

confidence: 99%

“…where χ|| is the longitudinal susceptibility, J0,νκ = J0 = NDJ with J is the exchange coupling between the nearest neighbor atomistic spins and ND is the coordination number. Following the earlier works, [21][22][23] these parameters me, χ||, and χ, are reasonably estimated by numerical simulations using the stochastic LLG equation based on the atomistic model. As an example, we present the estimated parameters (empty points) and corresponding fitted results (solid lines) in Fig.…”

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confidence: 99%

“…[24][25][26] This argument has been confirmed in earlier work which calculates the stochastic fields strictly using the Fokker-Planck equation. 23 When the stochastic fields are considered, the LLB equation for grain (i) now reads:…”

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confidence: 99%

“…We discuss the inter-grain exchange field between grain (i) and grain (j), using the same approach as given in Ref. 22…”

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confidence: 99%

“…Following the earlier work, a correction factor al/d should be taken into account to diminish the overestimation. 22 Moreover, considering the thermal fluctuations, the exchange stiffness is also…”

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confidence: 99%

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Landau-Lifshitz-Bloch equation for domain wall motion in antiferromagnets

et al. 2019

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In this work, we derive the Landau-Lifshitz-Bloch equation accounting for the multi-domain antiferromagnetic (AFM) lattice at finite temperature, in order to investigate the domain wall (DW) motion, the core issue for AFM spintronics. The continuity equation of the staggered magnetization is obtained using the continuum approximation, allowing an analytical calculation on the domain wall dynamics. The influence of temperature on the static domain wall profile is investigated, and the analytical calculations reproduce well earlier numerical results on temperature gradient driven saturation velocity of the AFM domain wall, confirming the validity of this theory. Moreover, it is worth noting that this theory could be also applied to dynamics of various wall motions in an AFM system. The present theory represents a comprehensive approach to the domain wall dynamics in AFM materials, a crucial step toward the development of AFM spintronics.

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confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

“…We discuss the inter-grain exchange field between grain (i) and grain (j), using the same approach as given in Ref. 22…”

mentioning

confidence: 99%

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confidence: 99%

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Landau-Lifshitz-Bloch equation for domain wall motion in antiferromagnets

et al. 2019

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Positions and Intensities of Regular Reflection Peaks

Krivoglaz¹

1996

X-Ray and Neutron Diffraction in Nonideal Crystals

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Thermal fluctuations in antiferromagnetic nanostructures

Semenov

2019

Journal of Magnetism and Magnetic Materials

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A theoretical model is developed that can accurately analyze the effects of thermal fluctuations in antiferromagnetic (AFM) nano-particles. The approach is based on Fourier series representation of the random effective field with cut-off frequencies of physical origin at low and high limits while satisfying the fluctuation-dissipation theorem at the same time. When coupled with the formalism of a Langevin dynamical equation, it can describe the stochastic Néel vector dynamics with the AFM parameters, circumventing the arbitrariness of the commonly used treatments in the micromagnetic simulations. Subsequent application of the model to spontaneous Néel vector switching provides a thermal stability analysis of the AFM states. The numerical simulation shows that the AFM states are much less prone to the thermally induced accidental flips than the ferromagnetic counterparts, suggesting a longer retention time for the former.

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Proton-γangular correlations in the reactionMg24(d,p

Cited by 6 publications

References 25 publications

Landau-Lifshitz-Bloch equation for domain wall motion in antiferromagnets

Landau-Lifshitz-Bloch equation for domain wall motion in antiferromagnets

Positions and Intensities of Regular Reflection Peaks

Thermal fluctuations in antiferromagnetic nanostructures

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