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首页> 外文期刊>Physical review >Intrinsic defects in perpendicularly magnetized multilayer thin films and nanostructures
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Intrinsic defects in perpendicularly magnetized multilayer thin films and nanostructures

机译:垂直磁化多层薄膜和纳米结构的内在缺陷

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摘要

Intrinsic magnetic defects in perpendicularly magnetized nanostructures reduce the predictability of device and developing recording technologies. In addition to a distribution of local anisotropy fields, we show that such defects also exhibit variations in local anisotropy axes. The magnetic defects are identified by the application of in-plane and out-of-plane magnetic fields and magnetic force microscopy imaging. Those defects that control magnetization reversal in arrays of patterned Co/Pd multilayers are highly dependent on applied field orientation. The symmetry of the defects with respect to the applied field direction indicates that the anisotropy consists of a canted axis, deviating from the surface normal. Micromagnetic simulations confirm that variations in anisotropy axis can cause a significant change in reversal field depending on the location and orientation of the defects, consistent with experimental results.
机译:垂直磁化纳米结构中的内在磁性缺陷降低了设备的可预测性并发展了记录技术。除了局部各向异性场的分布之外,我们还表明这种缺陷在局部各向异性轴上也表现出变化。磁性缺陷是通过应用面内和面外磁场以及磁力显微镜成像来识别的。控制图案化的Co / Pd多层阵列中的磁化反转的那些缺陷在很大程度上取决于所施加的磁场方向。缺陷相对于外加电场方向的对称性表明,各向异性由偏离表面法线的倾斜轴组成。微磁模拟证实,各向异性轴的变化会根据缺陷的位置和方向而引起反转场的显着变化,这与实验结果一致。

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