Basic Research on Tera-bits Spinic Data Storage

为克服传统单航迹记录的面记录密度和传输速率的限制，研究了基于多航迹并行记录、亚微米宽窄航迹记录和二维信号处理相结合的高速高密度棘波存储系统。1995年，研究了集成并行记录磁头和并行信号处理的概要，1996年开始了高分辨率单极磁头的设计。在本项目最后一年，1997年，制作了头部，并对其作为脊髓存储的记录性能进行了评估和研究。该飞滑块上薄膜导体激励单极磁头具有极高的记录灵敏度（0.05AT）和极低的电感（2nH），实现了高速数据传输。连续进行了垂直磁记录磁头读数的研究，其线密度比传统方法提高了一倍。结果在理论上得到了改进。单极头被证明具有与双层垂直介质相关的优越读写性能。此外，用新研制的飞行单极头进行了实验，验证了计算机模拟显示的轨迹边缘清晰。通过上述结果，研究了垂直磁记录的面密度为100 Gbits/inch^2的潜力，并最终证明了极高的面密度脊髓存储。

High speed high density spinic storage system based on multi-track parallel recording associated with submicron width narrow track recording and two-dimensional signal processing is investigated, in order to get rid of the limitation of areal recording density and transfer rate for conventional track-by-track recording. In 1995, outline of integrated parallel recording head and parallel signal processing was studied, and a design of high resolution single pole head was started in 1996. In the last year for this project, in 1997, the head was prepared and its recording performance has been evaluated and investigated as the spinic storage.The thin-film conductor exciting single pole head on a flying slider indicated very high recording sensitivity, 0.05AT,and extremely low inductance, 2nH,which realized high speed data transfer. Investigation of MR head reading for perpendicular magnetic recording has been continuously done, which brought doubling linear density comparing conventional method. The results were theoretically improved. The single pole head was demonstrated superior read/write performance associated with the double layr perpendicular media. In addition, well-defined track edge that was shown by computer simulation was experimentally confirmed with the newly developed flying single pole head.By above mentioned results, potential of perpendicular magnetic recording for areal density of 100 Gbits/inch^2 has been investigated, which end up with the evidence of extremely high areal density spinic storage.