Effect of stray field on local spin modes in exchange-biased magnetic tunnel junction elements
Effect of stray field on local spin modes in exchange-biased magnetic tunnel junction elements
复制标题
杂散场对交换偏置磁隧道结元件局部自旋模式的影响
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
H. Boeve
中科院分区：
文献类型：
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作者：
J. Rietjens;C. Jozsa;De Jonge;B. Koopmans;H. Boeve
我们报道了用时间分辨扫描克尔显微镜检测多层自旋电子器件中的局域自旋模式。对该13×9μm2交换偏置磁隧道结元件在不同施加偏置场下的测量表明，来自固定CoFe层的杂散场对自由nfe层的磁化动力学有很强的影响。这一观点得到了微磁模拟的支持，微磁模拟也表明，这种动力学可以归因于元素内部磁场的特定形状。
We report on the detection of localized spin modes in a multilayered spintronic device by means of time-resolved scanning Kerr microscopy. Measurements on this 13×9μm2 exchange-biased magnetic tunnel junction element at different applied bias fields indicate a strong effect of the stray field from the pinned CoFe layer on the magnetization dynamics in the free NiFe layer. This view is supported by micromagnetic simulations, which also show that the dynamics can be attributed to the specific shape of the internal magnetic field in the element.