Co/Pd多层膜的垂直梯度各向异性
Vertically Graded Anisotropy in Co/Pd Multilayers
摘要：
已经预测垂直磁介质中磁各向异性的深度分级可以在不牺牲热稳定性的情况下降低写入数据所需的场。为了研究这个预测，我们已经产生了Co/Pd多层膜与深度相关的Co层厚度。极化中子反射仪表明，厚度梯度的结果在相应的磁各向异性梯度。磁性测定揭示了各向异性梯度促进磁化反转时的畴成核-梯度各向异性用于减少写入场的有效性的清楚的实验证明。
英文摘要：
Depth-grading of magnetic anisotropy in perpendicular magnetic media has been predicted to reduce the field required to write data without sacrificing thermal stability. To study this prediction, we have produced Co/Pd multilayers with depth-dependent Co layer thickness. Polarized neutron reflectometry shows that the thickness grading results in a corresponding magnetic anisotropy gradient. Magnetometry reveals that the anisotropy gradient promotes domain nucleation upon magnetization reversal - a clear experimental demonstration of the effectiveness of graded anisotropy for reducing write-field.
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