Areal density optimizations for heat-assisted magnetic recording of high-density media
Areal density optimizations for heat-assisted magnetic recording of high-density media
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DOI：
10.1063/1.4953390
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发表时间：
2015-12
影响因子：
3.2
通讯作者：
C. Vogler;C. Abert;F. Bruckner;D. Suess;D. Praetorius
中科院分区：
文献类型：
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作者：
C. Vogler;C. Abert;F. Bruckner;D. Suess;D. Praetorius
热辅助磁记录（HAMR）有望成为未来高密度存储设备的记录技术。然而，存在若干实现战略。用粗粒度的Landau-Lifshitz-Bloch模型，我们详细研究了连续和脉冲激光点记录叠瓦和传统的位图案介质的优点和缺点。此外，我们比较单相晶粒和位具有双层结构的梯度居里温度，由一个硬磁层与高TC和一个软磁层与低TC，分别。为了尽可能真实地描述整个写入过程，考虑了晶粒尺寸和居里温度的分布、磁头的位移抖动以及位位置。对于所有这些情况下，我们计算各种晶粒图案，温度和写头位置的误码率，以优化可实现的面存储密度。在我们的分析中，用连续激光脉冲叠瓦HAMR…
Heat-assisted magnetic recording (HAMR) is hoped to be the future recording technique for high-density storage devices. Nevertheless, there exist several realization strategies. With a coarse-grained Landau-Lifshitz-Bloch model, we investigate in detail the benefits and disadvantages of a continuous and pulsed laser spot recording of shingled and conventional bit-patterned media. Additionally, we compare single-phase grains and bits having a bilayer structure with graded Curie temperature, consisting of a hard magnetic layer with high TC and a soft magnetic one with low TC, respectively. To describe the whole write process as realistically as possible, a distribution of the grain sizes and Curie temperatures, a displacement jitter of the head, and the bit positions are considered. For all these cases, we calculate bit error rates of various grain patterns, temperatures, and write head positions to optimize the achievable areal storage density. Within our analysis, shingled HAMR with a continuous laser pul...