Thermal Relaxation of Recorded Signal on Hard Disk at High Recording Density

JIANG Wen-hong; LUO Si-wei; ZHONGCUN Qing-jiu

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Thermal Relaxation of Recorded Signal on Hard Disk at High Recording Density

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- Thermal Relaxation of Recorded Signal on Hard Disk at High Recording Density
- Acta Electronica Sinica Vol. 29, Issue 11, Pages: 1512-1514(2001)
- 作者机构：
  
  1. 北方交通大学计算机与信息技术学院,北京,100044
  2. 北方交通大学计算机与信息技术学院北京,100044
  3. 日本东北大学电气通信研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP333
- Published：2001
- 稿件说明：
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JIANG Wen-hong, LUO Si-wei, ZHONGCUN Qing-jiu. Thermal Relaxation of Recorded Signal on Hard Disk at High Recording Density[J]. Acta Electronica Sinica, 2001, 29(11): 1512-1514.
DOI：

JIANG Wen-hong, LUO Si-wei, ZHONGCUN Qing-jiu. Thermal Relaxation of Recorded Signal on Hard Disk at High Recording Density[J]. Acta Electronica Sinica, 2001, 29(11): 1512-1514. DOI：

摘要

通过实验以及定量计算探讨了垂直二层膜介质由热磁衰减引起的输出信号衰减现象.同时讨论了由单磁极磁头带来的一些影响.并指出如果能避免这些影响

垂直磁记录的热磁衰减量要比相应的报道结果小很多.垂直磁记录即使在膜厚度较厚的情况下

由于粒子尺寸很小

仍然能够实现很高的记录密度并保持低介质噪声.

Abstract

Output decay by thermal relaxation in perpendicular double-layered media is studied by numerical calculation and experiments. In addition some influences due to a single pole head are pointed out. We suggested that if these influences could be avoided

thermal relaxation in perpendicular magnetic recording would be much smaller than reported so far. High recording density and low noise is possible with relatively small particles

even at large film thickness in perpendicular magnetic recording.

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