二维偶极受阻伊辛铁磁体中的条纹宽度与非局域畴壁
统计力学
2008-03-31 v2 材料科学
摘要
我们描述了一种新型磁畴壁,与 Bloch 壁或 Neel 壁不同,它是非局域的,并且在特定温度范围内是非单调的。该畴壁表现为受长程偶极相互作用受阻的二维铁磁伊辛模型的均值场解。我们在垂直磁化超薄磁性薄膜的条纹畴相中提供了这种畴壁离域化的实验证据。与实验结果一致,我们发现条纹宽度随温度升高而减小,并在居里温度处遵循幂律趋近于一个有限值。在二维库仑受阻伊辛铁磁体的均值场近似中,预计会出现同类畴壁以及类似的条纹宽度温度依赖性。
引用
@article{arxiv.0707.1582,
title = {Stripe width and non-local domain walls in the two-dimensional Dipolar Frustrated Ising Ferromagnet},
author = {Alessandro Vindigni and Niculin Saratz and Oliver Portmann and Danilo Pescia and Paolo Politi},
journal= {arXiv preprint arXiv:0707.1582},
year = {2008}
}
备注
5 pages, the manuscript has been rewritten in several parts and figures have been modified. To be published in Physical Review B