Model analysis of tilted spin-torque oscillator with magnetic write head for shingled microwave-assisted magnetic recording
Model analysis of tilted spin-torque oscillator with magnetic write head for shingled microwave-assisted magnetic recording
复制标题
叠瓦式微波辅助磁记录磁写头倾斜自旋矩振荡器模型分析
DOI：
10.1109/tmag.2014.2325609
复制
发表时间：
2014
影响因子：
2.1
通讯作者：
and H. Muraoka
中科院分区：
文献类型：
--
作者：
T. Katayama;Y. Kanai;K. Yoshida;S. J. Greaves;and H. Muraoka
在本文中，我们使用微磁模拟（μ-mag）、颗粒翻转概率（GFP）模型和软件记录通道仿真平台来估计微波辅助磁记录（MAMR）可实现的面密度。在之前的工作中，在Tohoku，在具有高各向异性能量的单层记录介质上，基于不同晶粒尺寸和位长的铺瓦磁记录方案对MAMR进行了微磁模拟。微磁输出随后用于表征GFP模型，并在DSI上运行低密度奇偶校验编码通道模拟。信道模拟确定了使MAMR工作所需的码率，由此可以确定带状MAMR的用户面密度。这个系统级的研究让我们深入了解错误率和信噪比对MAMR面密度的影响。
In this paper, we perform an estimate of the areal density achievable for microwave-assisted magnetic recording (MAMR) using micromagnetic simulations (μ-mag), the grain-flipping probability (GFP) model, and a software recording channel simulation platform. In previous work, at Tohoku, micromagnetic simulations were run for the MAMR based on various grain sizes and bit lengths in a shingled magnetic recording scheme on single-layer recording media with high anisotropy energy. The micromagnetic outputs are subsequently used to characterize the GFP model and run low-density parity check coded channel simulations at the DSI. The channel simulations determine the code rate needed to make the MAMR work from which the user areal density for shingled MAMR can be determined. This system-level study gives us insight into the impact the error rates and the signal-to-noise ratio have on the areal density for the MAMR.