Shape control of ferromagnetic MnAs nanoclusters exhibiting magnetization switching in vertical MnAs/InAs heterojunction nanowires
Shape control of ferromagnetic MnAs nanoclusters exhibiting magnetization switching in vertical MnAs/InAs heterojunction nanowires
复制标题
DOI：
10.7567/jjap.56.06gh03
复制
发表时间：
2017-06
影响因子：
1.5
通讯作者：
Ryutaro Kodaira;Kyohei Kabamoto;S. Hara
中科院分区：
文献类型：
--
作者：
Ryutaro Kodaira;Kyohei Kabamoto;S. Hara
我们详细报道了垂直MnAs/InAs异质结纳米线中铁磁MnAs纳米团簇的生长时间依赖性和异质结纳米线中磁化翻转的分析。MnAs纳米团簇的尺寸随着MnAs纳米团簇的生长时间的增加而增加。此外，我们观察到具有平行于c轴的相对大的高度的MnAs纳米团簇中的一个中的磁化和磁化切换，即，磁难轴，可能是由于磁形状各向异性沿着c轴，在施加几乎平行于MnAs纳米团簇的c轴的外部磁场后。这些结果表明，MnAs纳米团簇的生长时间是控制垂直MnAs/InAs异质结纳米线中MnAs纳米团簇的尺寸、形状和均匀磁化的关键。
We report in detail on the growth time dependence of ferromagnetic MnAs nanoclusters in vertical MnAs/InAs heterojunction nanowires and the analysis of magnetization switching in a heterojunction nanowire. The size of MnAs nanoclusters increases with increasing growth time of MnAs nanoclusters. In addition, we observe the magnetization and magnetization switching in one of the MnAs nanoclusters with a relatively large height parallel to the c-axis, i.e., the magnetic hard axis, possibly owing to the magnetic shape anisotropy along the c-axis, after the application of external magnetic fields nearly parallel to the c-axis of MnAs nanoclusters. These results suggest that the growth time of MnAs nanoclusters is a key to controlling the size, shape, and even magnetization of MnAs nanoclusters in vertical MnAs/InAs heterojunction nanowires.