Composite media for perpendicular magnetic recording
Composite media for perpendicular magnetic recording
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DOI：
10.1109/tmag.2004.838075
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发表时间：
2005-02-01
影响因子：
2.1
通讯作者：
Shen, X
中科院分区：
文献类型：
--
作者：
Victora, RH;Shen, X
提出了一种由磁硬区和磁软区组成的复合垂直记录介质。外加场的施加首先引起软区磁化的旋转，从而改变施加在硬区的有效场的角度。有效场的这一重要变化是由一个交换层实现的，该交换层调节了两个区域之间的相互作用。能量参数表明，由此产生的性能（通过能量势垒与开关场的比值来测量）与先前提出的倾斜介质相似，同时避免了一些困难。特别是，所提出的复合介质的制造似乎比倾斜介质的制造要容易得多。
A composite perpendicular recording media consisting of magnetically hard and soft regions within each grain is proposed . Application of applied field initially causes the magnetization of the soft region to rotate and, thus, change the angle of the effective field applied to the hard region. This important change in the effective field is enabled by an exchange layer that moderates the interaction between the two regions. Energy arguments show that the resulting performance (as measured by the ratio of energy barrier to switching field) is similar to the previously proposed tilted media, while avoiding some of the difficulties. In particular, fabrication of the proposed composite media appears to be significantly easier than that of tilted media.