Angular dependence of magnetization switching for a multidomain dot: Experiment and simulation
Angular dependence of magnetization switching for a multidomain dot: Experiment and simulation
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多畴点磁化强度切换的角度依赖性：实验和模拟
DOI：
10.1103/physrevb.70.172409
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发表时间：
2004
影响因子：
3.7
通讯作者：
J. Kirschner
中科院分区：
文献类型：
--
作者：
O. Fruchart;J. Toussaint;P. Jubert;W. Wernsdorfer;R. Hertel;D. Mailly;J. Kirschner
我们用微型 SQUID 测量了多畴磁性单点的成核场和湮灭场的面内角度变化。这些点是在超高真空中自组装的$\mathrm{Fe}∕\mathrm{Mo}(110)$，具有亚微米尺寸和细长的六边形形状。通过微磁模拟定量地再现了角度变化。观察到变化的不连续性，并且表明这是由与不均匀磁化状态与点形状的相互作用相关的分叉引起的。
We have measured the in-plane angular variation of nucleation and annihilation fields of a multidomain magnetic single dot with a micro-SQUID. The dots are $\mathrm{Fe}∕\mathrm{Mo}(110)$ self-assembled in ultrahigh vacuum, with submicron size and an elongated hexagonal shape. The angular variations were quantitatively reproduced by micromagnetic simulations. Discontinuities in the variations are observed, and shown to result from bifurcations related to the interplay of the nonuniform magnetization state with the shape of the dot.