| 高记录密度下磁盘记录信号的热磁衰减现象 |
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| 引用本文： | 姜文红,罗四维,中村庆久.高记录密度下磁盘记录信号的热磁衰减现象[J].电子学报,2001,29(11):1512-1514. |
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| 作者姓名： | 姜文红 罗四维 中村庆久 |
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| 作者单位： | 1. 北方交通大学计算机与信息技术学院,北京 100044;2. 日本东北大学电气通信研究所 |
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| 基金项目： | 北方交通大学论文基金 (No.PD 1 0 5 1 0 6) |
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| 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.
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| 关 键 词： | 热磁衰减 输出信号衰减 单磁极磁头 垂直磁记录 |
| 文章编号： | 0372-2112(2001)11-1512-03 |
| 收稿时间： | 2001-01-11 |
Thermal Relaxation of Recorded Signal on Hard Disk at High Recording Density |
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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. |
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| Authors: | JIANG Wen-hong LUO Si-wei ZHONGCUN Qing-jiu |
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| Affiliation: | 1. School of Computer & Information Technology,Northern Jiaotong University,Beijing 100044,China;2. Research Institute of Electrical and Communication, Tohoku Univ.,Japan |
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| 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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| Keywords: | thermal relaxation output decay single pole head perpendicular magnetic recording |
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