Adaptive mesh refinement for micromagnetics simulations

Adaptive mesh refinement for micromagnetics simulations
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DOI:
10.1109/tmag.2006.872199
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发表时间:
2006-06-01
影响因子:
2.1
通讯作者:
Roma, Alexandre M.
Roma, Alexandre M.
中科院分区:
工程技术4区
文献类型:
--
作者:
Garcia-Cervera, Carlos J.;Roma, Alexandre M.

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我们提出了一种有效的微磁学模拟方法。该方法结合了一个无条件稳定的,有限差分格式与自适应网格细化技术。它通过用一系列嵌套的、逐渐更精细的矩形网格片覆盖域的局部特殊区域来增强准确性,所述矩形网格片动态地跟随磁化场的急剧转变(例如,墙和漩涡)。为了说明我们的方法,我们考虑了一个无限厚的矩形样品,在出平面方向具有强各向异性。
We present a methodology for efficient micromagnetics simulation. The method combines an unconditionally stable, finite differences scheme with an adaptive mesh refinement technique. It enhances accuracy by covering locally special regions of the domain with a sequence of nested, progressively finer rectangular grid patches that dynamically follow sharp transitions of the magnetization field (e.g., walls and vortices). To illustrate our approach, we consider a rectangular sample of infinite thickness with strong anisotropy in the out-of-plane direction.