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High density recording with single pole head

Journal of Magnetics Society of Japan Volume 11 Issue 2 Page 109-114
published_at 1987
Title
単磁極形垂直磁気ヘッドによる高密度記録
High density recording with single pole head
Creators Yamamoto Setsuo
Creators 中村 慶久
Creators 岩崎 俊一
The feasibility of high bit density recording was investigated experimentally in a perpendicular magnetic recording system using a single pole head and a Co-Cr/Ni-Fe double layer medium. To improve the reproducing sensitivity and resolution, the following were adopted: (a) Use of a newly developed high-sensitive single pole head. (b) Use of a medium with a relatively thin (0.1 μm) Co-Cr layer and a thick (0.5μm) Ni-Fe underlayer. c Achievement of head-to-medium spacings less than 0.03μm. As a result, reproduced signals were detected up to 680 kFRPI. The recording bit length at the highest density was of the order of the Co-Cr column diameter of the medium. This result proves that the high density recording up to the intrinsic limit of the medium is possible because this method is free from recording demagnetization effects at high densities.
Languages jpn
Resource Type journal article
Publishers 日本応用磁気学会
Date Issued 1987
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0285-0192
[NCID]AN0031390X
https://doi.org/10.3379/jmsjmag.11.109
[isVersionOf] [URI]http://www.wdc-jp.com/msj/journal/index.html
Schools 大学院理工学研究科(工学)