Microwave assisted magnetic recording
Microwave assisted magnetic recording
复制标题
DOI：
10.1109/tmag.2007.911031
复制
发表时间：
2008-01-01
影响因子：
2.1
通讯作者：
Tang, Yuhui
中科院分区：
文献类型：
--
作者：
Zhu, Jian-Gang;Zhu, Xiaochun;Tang, Yuhui
在本文中，我们提出了一种新的机制，记录在一个头字段显着低于介质的垂直记录几何的折射率。通过在垂直记录介质上施加足够频率的局部交流场，可以在记录场幅度显著低于介质介电常数或介质垂直各向异性场的情况下实现饱和记录。提出了一种利用自旋扭矩在介质中产生具有千奥斯特场振幅的高频（数十GHz）局部交流场的方案，并沿着进行了系统的建模分析。记录模拟在高线性密度。
In this paper, we present a novel mechanism for recording at a head field significantly below the medium coercivity in a perpendicular recording geometry. By applying a localized ac field at adequate frequency to the perpendicular recording medium, saturation recording can be achieved with recording field amplitudes significantly below the medium coercivity, or the medium perpendicular anisotropy field. A scheme utilizing spin torque to generate a localized ac field at high frequency (tens of gigahertz) with kilo-oersted field amplitude in the medium is proposed along with a systematic modeling analysis. Recording simulations at high linear densities are presented.