Direct observation of a magnetic domain change in Ni wire and film on a LiNbO3 substrate using X-ray magnetic circular dichroic photoemission electron microscopy
Direct observation of a magnetic domain change in Ni wire and film on a LiNbO3 substrate using X-ray magnetic circular dichroic photoemission electron microscopy
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DOI：
10.35848/1347-4065/abdcce
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发表时间：
2021-05-01
影响因子：
1.5
通讯作者：
Yamaguchi, Akinobu
中科院分区：
文献类型：
--
作者：
Nakamura, Ryo;Saegusa, Shunya;Yamaguchi, Akinobu
在施加直流电流或加热时，观察到沉积在LiNbO3衬底上的Ni线的磁畴结构调制。由于来自异质结的磁形状各向异性和单轴磁各向异性之间的竞争，在垂直于LiNbO3衬底x轴的Ni线中形成条纹畴结构。我们观察到条纹结构随着直流电流的增大而消失。以同样的方式，也证实了条纹磁畴结构随着衬底加热而消失。这些结果被认为是由于界面氧化反应导致单轴磁各向异性和磁化强度的降低。异质结在控制和调制该系统的磁性能中起着重要作用。
The magnetic domain structure modulation in Ni wires deposited on a LiNbO3 substrate is observed during the application of a DC current or heating. A striped domain structure is formed in the Ni wires that is aligned perpendicular to the X-axis of the LiNbO3 substrate owing to the competition between magnetic shape anisotropy and uniaxial magnetic anisotropy from the heterojunction. We observe that the striped domain structure disappears as the DC current is increased. In the same manner, it is also confirmed that the striped magnetic domain structure disappears as the substrate is heated. These results are considered to arise from the decrease in uniaxial magnetic anisotropy and magnetization owing to an oxidation reaction at the interface. Heterojunctions are identified to play an important role in controlling and modulating the magnetic properties of this system.