Magnetization reversal of uncompensated Fe moments in exchange biased Ni∕FeF2 bilayers
Magnetization reversal of uncompensated Fe moments in exchange biased Ni∕FeF2 bilayers
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DOI：
10.1063/1.2173716
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发表时间：
2006
影响因子：
4
通讯作者：
E. Arenholz;Kai Liu;Zhi-Pan Li;I. Schuller
中科院分区：
文献类型：
--
作者：
E. Arenholz;Kai Liu;Zhi-Pan Li;I. Schuller
用软X射线磁性圆二色性和线二色性测定了交换偏置Ni/FeF{sub 2}双层膜中未补偿Fe磁矩的磁化反转。由Fe磁矩引起的磁滞回线与铁磁Ni层的磁滞回线几乎相同。然而，一个垂直的环路移位表明，一些铁的时刻被钉扎在反铁磁有序的FeF{sub 2}。被钉扎的时刻是反向平行于小的冷却场导致负的交换偏置，但平行于大的冷却场导致正的交换偏置。没有迹象表明在Fe F {sub 2}层中形成平行的反铁磁畴壁后，在Ni层中的磁化反转被发现。
The magnetization reversal of uncompensated Fe moments in exchange biased Ni/FeF{sub 2} bilayers was determined using soft x-ray magnetic circular and linear dichroism. The hysteresis loops resulting from the Fe moments are almost identical to those of the ferromagnetic Ni layer. However, a vertical loop shift indicates that some Fe moments are pinned in the antiferromagnetically ordered FeF{sub 2}. The pinned moments are oriented antiparallel to small cooling fields leading to negative exchange bias, but parallel to large cooling fields resulting in positive exchange bias. No indication for the formation of a parallel antiferromagnetic domain wall in the FeF{sub 2} layer upon magnetization reversal in the Ni layer was found.