Significant Reduction of Switching Field and its Distribution in Co/Pt Nanodots with Assistance of Radio Frequency Field
Significant Reduction of Switching Field and its Distribution in Co/Pt Nanodots with Assistance of Radio Frequency Field
复制标题
射频场辅助下 Co/Pt 纳米点开关场及其分布的显着降低
DOI：
10.1143/apex.5.093005
复制
发表时间：
2012
影响因子：
2.3
通讯作者：
他
中科院分区：
文献类型：
--
作者：
S. Okamoto;他
微波辅助磁化翻转（MAS）是未来超高密度磁记录的关键技术。为了探索MAS的可行性，我们研究了如何通过施加射频场来修改具有垂直磁各向异性的单个Co/Pt多层纳米点的磁化切换行为。结果表明，该行为依赖于射频场的振幅。对于大的射频场，但远小于有效垂直各向异性场，开关场可以显着降低。此外，在没有射频场的情况下，开关场的宽色散也变得相当窄。
Microwave assisted magnetization switching (MAS) is a key technology for future ultra high-density magnetic recording. To explore the feasibility of MAS, we have studied how the magnetization switching behavior of individual Co/Pt multilayer nanodots with perpendicular magnetic anisotropy is modified by the application of rf fields. It is found that the behavior depends on the rf field amplitude. For a large rf field but much smaller than the effective perpendicular anisotropy field, the switching field can be reduced remarkably. Moreover, the broad dispersion of the switching field in the absence the of rf field also becomes quite narrow.