Media for 10 Gb/in.2 hard disk storage: Issues and status (invited)
Media for 10 Gb/in.2 hard disk storage: Issues and status (invited)
复制标题
10 Gb/in.2 硬盘存储介质：问题和状态（受邀）
DOI：
10.1063/1.361876
复制
发表时间：
1996
影响因子：
3.2
通讯作者：
D. Laughlin
中科院分区：
文献类型：
--
作者：
D. Lambeth;E. Velu;G. Bellesis;L. Lee;D. Laughlin
未来的10 Gb/in.2记录密度代表亚微米磁道宽度和亚100 nm位长度。这需要非常小的磁开关单元和非常高的介质介电系数来满足信噪比要求。同时，磁热稳定性的问题和缺乏能够在这些密度下工作的换能器使得难以评估介质。约10 nm的非耦合、高度均匀的磁性晶粒尺寸是朝着保持足够低的介质噪声而又保持磁稳定性的折衷。在这里，我们讨论当前的媒体建设，基板粗糙度的有害作用，新的媒体结构和合金的微观结构和磁性能的作用，以及评估媒体性能的技术之前，所需的重放头的可用性。
Future 10 Gb/in.2 recording densities represent submicron trackwidths and sub‐100 nm bit lengths. This requires extremely small magnetic switching units and very high coercivities of the media to satisfy the signal‐to‐noise ratio requirements. At the same time the question of magnetic thermal stability and the lack of transducers capable of performing at these densities makes it difficult to evaluate media. An uncoupled, highly uniform magnetic grain size of about 10 nm is a compromise toward maintaining an adequately low media noise and yet maintaining magnetic stability. Here we discuss current media construction, the detrimental role of substrate roughness, the role of new media structures and alloys on microstructure and magnetic properties as well as techniques for evaluating media performance prior to the availability of the required playback heads.