Micromagnetic study of magnetic configurations in submicron permalloy disks
Micromagnetic study of magnetic configurations in submicron permalloy disks
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DOI：
10.1103/physrevb.67.224432
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发表时间：
2003-06-11
影响因子：
3.7
通讯作者：
Kirschner, J
中科院分区：
文献类型：
--
作者：
Ha, JK;Hertel, R;Kirschner, J
本文利用微磁学原理对亚微米坡莫合金磁盘的磁结构进行了有限元研究。根据磁盘的大小，许多（Meta）稳定的磁状态，如正常和扭曲的洋葱，面内涡，和各种屈曲状态进行观察。构造了一个图表，以显示不同的recrystals状态对盘直径和厚度的依赖性。它表明，盘的厚度是决定性的因素，在确定涡状态是否是积极的更有利的比洋葱状态，和盘的直径决定一些面内屈曲是否可以持续。
We report a finite-element study of magnetic configurations in submicron permalloy disks using micromagnetics principles. Depending on the disk size, many (meta)stable magnetic states such as normal and twisted onion, in-plane vortex, and various buckle states are observed. A diagram is constructed to bring out the dependence of the different remanent states on the disk diameter and thickness. It shows that the disk thickness is the decisive factor in determining whether a vortex state is energetically more favorable than an onion state, and that the disk diameter determines whether some in-plane buckling can be sustainable.