4.5 Article

Role of nonlinear viscous dissipation on the magnetic domain wall motion in multiferroic heterostructures

出版社

TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2023.2283787

关键词

Domain wall motion; magnetostriction; spin-transfer torque; nonlinear dissipations; extended Landau-Lifshitz-Gilbert equation; magnetoelastic field

向作者/读者索取更多资源

This study theoretically investigates the propagation of strain-mediated magnetic domain walls in a magnetostrictive layer. The findings show that nonlinear viscous dissipation significantly affects the velocity of the domain walls and the steady-state regime.
This work theoretically investigates the strain-mediated magnetic domain wall propagation in a magnetostrictive layer, which is perfectly attached to a thick piezoelectric layer under the combined mechanism of nonlinear viscous and dry friction dissipation. The mathematical model of this study is formulated within the framework of the one-dimensional Extended Landau-Lifshitz-Gilbert equation, considering the simultaneous action of the applied magnetic and electric fields, nonlinear dissipations and piezo-induced strains. We use the traveling wave ansatz to derive analytical expressions of the key features like threshold, breakdown, and domain wall velocity in steady and precessional regimes. More precisely, our prime focus is to examine how nonlinear viscous dissipation affects the dynamics of domain walls in both isotropic and anisotropic magnetostrictive materials. The velocity profile of the magnetic domain wall becomes nonlinear due to the inclusion of the nonlinear viscous dissipation, which also significantly affects the Walker breakdown limit, thus leading to the expansion of the steady-state regime. Finally, we present a numerical illustration of the obtained analytical results, which agree well with recent observations.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据