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arXiv 1208.2987cond-mat.mes-hall
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薄铁磁圆盘中磁涡旋中心半径和能量的解析近似

Analytical approximations to the core radius and energy of magnetic vortex in thin ferromagnetic disks

Konstantin L. Metlov

摘要:

N.A. Usov和S.E. 1994年的Peschany。然而,静磁函数,进入能量表达式,是很难评估和近似。在这篇通讯中,精确和明确的解析近似这个功能(以及平衡涡核半径和能量)的初等函数推导出来。讨论了磁哈密顿量的几种简化近似及其对磁涡旋态理论稳定性的影响。

英文摘要:

The energy of magnetic vortex core and its equilibrium radius in thin circular cylinder were first presented by N.A. Usov and S.E. Peschany in 1994. Yet, the magnetostatic function, entering the energy expression, is hard to evaluate and approximate. In this communication precise and explicit analytical approximations to this function (as well as equilibrium vortex core radius and energy) are derived in terms of elementary functions. Also, several simplifying approximations to the magnetic Hamiltonian and their impact on theoretical stability of magnetic vortex state are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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