交换偏置纳米点中的去卷积反射模
Deconvoluting Reversal Modes in Exchange Biased Nanodots
摘要:
在Fe/FeF 2纳米点阵列中的整体平均交换偏置已被解卷积为通过不同反转模式的纳米点分别经历的局部、微观偏置。每种模式中的点的相对分数可以通过交换偏置来修改。单畴点表现出一个简单的环路移位,而涡旋态点在涡旋成核和湮灭场中具有不对称移位,表现出这些纳米点中的局部不完整畴壁作为具有倾斜核的磁涡旋。
英文摘要:
Ensemble-averaged exchange bias in arrays of Fe/FeF2 nanodots has been deconvoluted into local, microscopic, bias separately experienced by nanodots going through different reversal modes. The relative fraction of dots in each mode can be modified by exchange bias. Single domain dots exhibit a simple loop shift, while vortex state dots have asymmetric shifts in the vortex nucleation and annihilation fields, manifesting local incomplete domain walls in these nanodots as magnetic vortices with tilted cores.
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